戴尔精密双USB Type-C Thunderbolt 3坞站 - TB18DC用户指南说明书

2024年9月1日发(作者：旁俊良)

Dell Precision Dual USB Type-C Thunderbolt 3

Dock - TB18DC

User Guide

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

may be trademarks of their respective owners.

2018 - 05

Rev. A00

2 Package Contents .........................................................................................................................................5

3 Hardware Requirements ................................................................................................................................7

4 Identifying Parts and Features ......................................................................................................................8

5 10

6 Quick Setup of Hardware .............................................................................................................................11

7 Thunderbolt Settings and 14

Thunderbolt .14

8 Setup of 19

Updating the graphics drivers for 19

Configuring 19

Display 23

9 24

LED 24

Power 24

.24

Docking 24

Docking Specifications .............................................................................................................................................25

Input/Output (I/O) 27

10 Frequently 28

11 Troubleshooting the Dell Precision Dual USB Type-C Thunderbolt .30

Symptoms 30

12 34

Contents3

Introduction

The Dell Precision Dual USB Type-C Thunderbolt 3 Dock - TB18DC is a device that links all your electronic devices to your laptop computer

using a dual Thunderbolt 3 (Type-C) cable interface. When you connect the laptop to the docking station, you can gain access to all your

peripherals such as the mouse, keyboard, stereo speakers, external hard drive, and large-screen displays without having to plug each one

into the laptop.

NOTE: Compatible only with Dell Precision 7000 series laptops (7730/7530) with dual Thunderbolt ports.

NOTE: The Dell Precision Dual USB Type-C Thunderbolt 3 Dock only supports Thunderbolt 3 technology. Older versions of

Thunderbolt are NOT SUPPORTED.

CAUTION: You must update your computer’s BIOS and the Dell Docking Station drivers to the latest versions available at

/support before using the docking station. Older BIOS versions and drivers could result in the docking station not

being recognized by your computer or not functioning optimally. Please see the Important Information chapter for detailed

instructions on how to update your BIOS, Graphics, and Thunderbolt drivers/firmware as well as other associated drivers before

using the Dell Precision Dual USB Type-C Thunderbolt 3 Dock - TB18DC.

4Introduction

Package Contents

Your docking station ships with the components shown below. Ensure that you have received all the components and contact Dell (see

your invoice for contact information) if something is missing.

Docking Station

with Dual USB

Type-C

connector cable

180 W / 240 W

Power Adapter

Power Cord

Quick Setup

Guide (QSG)

Package Contents 5

Safety,

Environmental,

and Regulatory

Information

(SERI)

6Package Contents

Hardware Requirements

The Dell Precision Dual USB Type-C Thunderbolt 3 Dock - TB18DC is designed for use only with the Dell Precision 7000 Series laptops

(7730/7530) with dual Thunderbolt 3 ports.

Hardware Requirements 7

Identifying Parts and Features

Figure 1. Identifying Parts and Features — Front

Audio headset portUSB 3.0 port with PowerShare

USB 3.0 portPower Adapter LED Indicator

Sleep/Wake up/Power button

IMPORTANT: The dock button is designed to replicate your system's power button. If you connect the TB18DC to supported

Dell computers, the dock button will work like your computer's power button and you can use it to "power on"/sleep/"force

shutdown" the computer.

NOTE: The dock button is not functional if connected to non-supported Dell computers or non-Dell computers.

8Identifying Parts and Features

Figure 2. Identifying Parts and Features — Back

Kensington Lock slotUSB 2.0 port

HDMI portUSB 3.0 port

DisplayPort (Mini and Full)Line-out

VGA portPower connector

Network connector (RJ-45)

Identifying Parts and Features 9

Important Information

You must update your computer’s BIOS and the Dell Docking Station drivers to the latest versions available at /support

before using the docking station. Older BIOS versions and drivers could result in the docking station not being recognized by your computer

or not functioning optimally.

Dell highly recommends the following applications to automate the installation of BIOS, firmware, driver, and critical updates specific to your

system and docking station:

•

Dell | Update - for Dell XPS systems only.

Dell Command | Update - for Dell Latitude, Dell Precision, or XPS systems.

These applications are available for download on the Drivers & Downloads page for your product at /support

Pick your system type from the list or enter the service tag of your system to get the right version for your computer.

NOTE: TB18DC dock connection to your computer is required in order for Dell Update to start software updates on the host

system.

Dell Command I Update application is supported on Dell Precision, XPS, and Latitude notebooks. Alternatively, Dell recommends installing

the following BIOS, firmware, and drivers step-by-step in the prescribed order to ensure optimal performance:

Search for your system model name under Select a Product selection, or enter the service tag of your system to locate the Drivers &

Downloads page on the Dell support website (/support). Change the Operating System to view all available updates for your

system.

•

Flash the latest Basic Input/Output System (BIOS) for the system. This is available in the "BIOS" section.

Install the latest Intel Thunderbolt Controller Driver for the system. This is available in the "Chipset" section.

Install the latest Intel Thunderbolt 3 Firmware Update for the system. This is available in the "Chipset" section.

Install the latest Intel HD Graphics Driver for the system. This is available in the "Video" section.

Install the latest ASMedia USB 3.0 Extended Host Controller Driver for Dell Thunderbolt Dock. This is available in the "Docks &

Stands" section.

Install the latest Realtek USB GBE Ethernet Controller Driver for Dell Thunderbolt Dock and Dell Dock. This is available in the

"Docks & Stands" section.

Install the latest Realtek USB Audio Driver for Dell Thunderbolt Dock and Dell Dock. This is available in the "Docks & Stands"

section.

Restart the system.

After the software update process completes, connect the AC adapter to the TB18DC dock first and then attach the Thunderbolt 3

(Type-C) cable to the computer before using the docking station.

10Important Information

Quick Setup of Hardware

1 Update your laptop's BIOS from /support/drivers

2 Update the laptop's and dock's drivers from /support/drivers

3 Connect the AC adapter to a power outlet. Then, connect the AC adapter to the 7.4 mm DC-in power input on the Dell Precision USB

Type-C Thunderbolt 3 Dock TB18DC.

Quick Setup of Hardware 11

Figure 3. Connecting the AC Adapter

12Quick Setup of Hardware

4 Connect the Thunderbolt 3 (Type-C) connector to the computer.

Figure 4. Connecting the Thunderbolt 3 (Type-C) connector

NOTE: On TB18DC-supported Dell computers, connecting the Thunderbolt 3 (Type-C) cable will auto wake-up the laptop

and connect any peripherals already attached. This behavior can be disabled in your BIOS Setup option “Wake on Dell USB-

C Docks”.

Follow the on-screen instructions to give the Dell Thunderbolt Dock permission to connect to your computer. See Thunderbolt Driver

Settings for more information.

Connect multiple displays to the docking station, as needed.

CAUTION: Ensure you place the dock away from the laptop to avoid hot air reflux from the laptop's air vents.

Quick Setup of Hardware 13

Thunderbolt Settings and Security Options

Thunderbolt Driver Setting

1 Connect the Thunderbolt Device to the system. The Thunderbolt icon appears in the system tray.

2 An Authentication window pops up for the user to select the connection setting.

3 Right click on the Thunderbolt icon to View Attached Thunderbolt Devices.

14Thunderbolt Settings and Security Options

4 Right click on the Thunderbolt Icon to view Thunderbolt Settings.

Thunderbolt Settings and Security Options15

5 Click Details to view (Thunderbolt driver/firmware) version details

16Thunderbolt Settings and Security Options

Thunderbolt Configuration

If Dell BIOS is used in your system, you may find below Control options in Thunderbolt Configuration page in your BIOS Setup:

1Enable Thunderbolt Technology Support (Enabled by default)

•

When enabled, the Thunderbolt Technology feature, and associated ports and adapters are enabled.

When disabled, the Thunderbolt Technology feature is disabled, and any connected Thunderbolt adapter devices are not available

in pre-boot or within the operating system.

When enabled, the following Thunderbolt adapter features are enabled during Pre-boot: Thunderbolt adapter boot support, USB

device on Thunderbolt adapter support (including USB boot support). This allows Thunderbolt adapter peripheral devices and

USB devices connected to the Thunderbolt adapter to be used during BIOS pre-boot. However, setting this to “Enabled” will

override the Security Levels utilized within the operating system. When this setting is enabled, any Thunderbolt adapter

peripherals and USB devices connected to the Thunderbolt adapter port prior to booting the system can be used in pre-boot. As

long as the device remains connected, it will continue to function within the operating system, regardless of the Security Level set

in BIOS.

When enabled, this setting will allow PCIe devices that are connected through a Thunderbolt adapter (i.e. PCIe devices behind the

Thunderbolt adapter) to execute the PCIe device’s UEFI Option ROM(s) (if present) during pre-boot.

When disabled, this setting will prevent PCIe device Option ROMs from executing during pre-boot for PCIe devices connected

behind the Thunderbolt adapter.

Enable Thunderbolt Boot Support (Disabled by default)

•

3Enable Thunderbolt Adapter Pre-boot Modules (Disabled by default)

•

NOTE: Enabling the “Enable Thunderbolt Adapter Boot Support“ or “Enable Thunderbolt Adapter Pre-boot Modules“ options

may allow devices connected to the Thunderbolt adapter during pre-boot to function in the operating system regardless of the

Security Level selected in BIOS Setup. The device will continue to operate in the operating system until it is disconnected. When

reconnected while within the operating system, the device will connect according to the Security Level and previous OS

authorizations.

Thunderbolt Settings and Security Options17

Thunderbolt Security

The settings below configure the Thunderbolt adapter security settings within the operating system. Security Levels are not applicable or

enforced in the Pre-boot environment.

•

No Security: Automatically connect to devices plugged into the Thunderbolt port.

User Authorization: Approval is required for any new devices connected to the Thunderbolt port.

Secure Connect: The Thunderbolt adapter port will only allow connection to devices that have been configured with a shared key.

NOTE: The first time a Thunderbolt peripheral’s Unique ID is granted “always connect” PCIe access, a secure encrypted key

is written to the peripheral controller’s non-volatile memory and added to the host PC’s ACL list. Each time a peripheral’s

Unique ID is found on the ACL, the PC’s controller sends a security challenge and the response from the peripheral is then

verified before the PCIe connection is allowed. If the response is not valid, the user receives a connection permission prompt.

This capability, when enabled, prevents pre-SL2 capable peripherals from connecting to a PC; thereby preventing a potential

HW spoofing of an approved device to generate a DMA exploit (beyond what is prevented with SL1).

•DisplayPort Only: Automatically connect to DisplayPort devices only. No Thunderbolt adapter or PCIe devices are allowed to connect.

In the BIOS of a Dell Thunderbolt-enabled PC, you will be able to configure the security settings of the Thunderbolt connection. You can

find the configuration options in the BIOS path: System Configuration > USB / Thunderbolt Configuration.

No security

User Authorization

Allow legacy Thunderbolt devices to auto-connect – the CM auto

connects a new device plugged in.

Allow User Notiﬁcation devices at minimum – the CM requests

connection approval from the host SW and auto-approval may be

given based on the Unique ID of the connecting device.

Allow one-time saved key devices at minimum – the CM requests

connection approval from the host SW and auto-approval is only

given if the host challenge to the device is acceptable.

Allow DisplayPort sinks to be connected (re-driver or DP tunnel, no

PCIe tunneling).

Secure Connect

DisplayPort Only

18Thunderbolt Settings and Security Options

Setup of External Monitors

Updating the graphics drivers for your computer

The Microsoft Windows operating systems include the VGA graphics drivers only. Therefore, for optimum graphics performance, it is

recommended that Dell graphics drivers applicable for your computer be installed from /support under the “Video” section

NOTE:

1For nVidia Discrete Graphics solutions on the Latitude E-Family and Mobile Precision computers:

aFirst, install the Intel Media Adapter Graphics Driver applicable to your computer.

bSecond, install the nVidia Discrete Graphics Driver applicable to your computer.

2For AMD Discrete Graphics solutions on the Latitude E-Family and Mobile Precision computers:

aFirst, install the Intel Media Adapter Graphics driver applicable to your computer.

bSecond, install the AMD Discrete Graphics driver applicable to your computer.

Configuring your Monitors

If connecting two displays, follow these steps:

1 Click the icon list on the task bar.

2 Click the Intel HD Graphics utility on your taskbar as shown here.

3 Click Graphics Properties.

Setup of External Monitors19

4 Click Display.

20Setup of External Monitors

Click Display and select Multiple Displays.

Setup of External Monitors21

6 Select your preferred Display Mode.

7 Select and arrange your displays to your preferred style and then click Apply for the changes to take effect.

22Setup of External Monitors

Display Resolution Table

Table 1. Display Resolution Table

Single Display (maximum

resolution)

**DP + mDP (Single Image):

5120 x 2880 @ 60Hz

DP/mDP/Type-C: 3840 x 2160

@ 60 Hz

Dual Display (maximum

resolution)

DP/mDP/Type-C: 3840 x 2160

@ 60 Hz

DP+VGA: 2 x 2560 x 1440 @60

Triple Display (maximum

resolution)

DP + mDP+HDMI: 3 x 3840 x

2160 @ 30 Hz

NOTE: DP port at 60 Hz

is supported, but mDP

+HDMI are limited to 30

Hz for 4k

Quad Display (maximum

resolution)

**mDP + HDMI + DP + VGA:

3x3840 x 2160 @ 30 Hz + 1x

1920 x1200 (VGA)

NOTE: **Discrete only

mode or “Special

Graphics Mode”.

HDMI: 3840 x 2160 @ 24/30 HzmDP+HDMI: 2 x 2560 x 1440

@60 Hz or 3840 x 2160 @ 30

VGA: 1920 x 1200 @ 60 HzHz

***Type-C: 5120 x 2880 @ 60

VGA may be limited to 2048 x

1280

NOTE: If higher resolution monitors are used, the Intel Graphics driver will make a judgement based on monitor specifications

and display configurations. Some resolutions may not be supported and so will be removed from the Intel Graphics Media Control

Panel.

NOTE: Resolution support is also dependent on the monitor’s Extended Display Identification Data (EDID) resolution.

NOTE: The 5K resolution support is only available in either of these conditions:

With discrete graphics mode only, or special graphics mode, or

*** Using the Thunderbolt 3 Type–C to a dual DisplayPort adapter.

NOTE: ** Configuration supported with AMD and Nvidia in discrete-only mode or special-graphics mode. These modes are listed

in the BIOS for the Dell Precision 7730/7530 systems and will require disabling switchable graphics for discrete-only mode or

enabling special-graphics mode when Switchable is enabled. If the system does not have these options in the BIOS, then 4

monitors are NOT supported.

Setup of External Monitors23

Technical specifications

LED Status Indicators

Power Adapter LED

Table 2. Power Adapter LED indicator

State

Power Adapter is plugged into wall socket

LED Behavior

Solid White

Cable LED

Table 3. Cable LED indicator

StateLED Behavior

Connected to a Dell Precision 7000 Series laptop (7730/7530) with Solid White

a dual Thunderbolt 3 port.

Docking Status Indicator

Table 4. Docking Station LED Indicators

State

Docking station is receiving power from power adapter

LED Behavior

Solid White

Table 5. RJ-45 LED Indicators

Link Speed Indicators

10 Mb = Green

100 Mb = Orange

1 Gb = Green + Orange

Ethernet Activity Indicator

Yellow Flashing

24Technical specifications

Docking Specifications

Standard

Video Ports

•

Thunderbolt 3 (Type-C)

mini DisplayPort x 1 (supports DP 1.2)

DisplayPort x 1

HDMI x 1 (supports HDMI 1.4a)

VGA Port x 1

Thunderbolt 3 (Type-C) port

Headset connector x 1

Line out x 1

Gigabit Ethernet (RJ-45) x 1

2 Front USB 3.0 Ports (one with PowerShare)

1 Rear USB 3.0 Port

2 Rear USB 2.0 Ports

1 Rear Thunderbolt 3 (Type-C) Port

one 7.4 mm DC-in port

0.8 m

Sleep/Wakeup/Power

Front status indicator

Audio Ports

Network Port

USB Ports

DC-in Port

USB Type-C cable length

Buttons

LED

Technical specifications25

Environmental Characteristics TemperatureOperating: 0 °C to 35 °C

Non-operating:

•

Storage: -20 °C to 60 °C (-4 °F to 140 °F)

Shipping: -20 °C to 60 °C (-4 °F to 140 °F)

HumidityOperating: 10% to 80% (non-condensing)

Non-operating:

•

Storage: 5% to 90% (non-condensing)

Shipping: 5% to 90% (non-condensing)

Average Power Consumption

Network Standby Power Consumption

Dimension

Weight

VESA Mounting options

4.384 W

5.8 W

145 mm x 145 mm x 52 mm

720 g (minimum)

Yes — via Dell Docking Station Mounting Kit

Table 6. Dell Thunderbolt 3 Dock -TB18DC Power Adapter

Adapter Specifications

Input voltage

Input current (max)

Input frequency

Output current

Rated output voltage

E4 180 W

100 VAC to 240 VAC

2.34 A

50 Hz to 60 Hz

9.23 A (continuous)

19.5 VDC

E4 240 W

100 VAC to 240 VAC

3.5 A

50 Hz to 60 Hz

12.31 A (continuous)

19.5 VDC

26Technical specifications

Input/Output (I/O) Connectors

The Dell Precision Dual USB Type-C Thunderbolt 3 Dock-TB18DC has the below I/O connectors:

Video Ports

•

mini DisplayPort x 1

DisplayPort x 1

HDMI x 1

VGA x 1

Thunderbolt 3 (Type-C) x 1

USB 2.0 x 2

USB 3.0 x 2

USB 3.0 PowerShare x 1

Thunderbolt 3 (Type-C) x 1

7.4 mm DC-in x 1

Gigabit Ethernet (RJ–45) x 1

Headset connector x 1

Line-out connector x 1

Input/Output Ports

Technical specifications27

Frequently asked questions

1The fan is not working after connecting with the system.

•

The fan is triggered by temperature. The dock fan will not rotate until the dock is hot enough to trigger a thermal threshold.

Vice versa, if your dock is not cool enough, the fan will not stop even when you disconnect the dock from the system.

When you hear a loud fan noise, it is warning you that the dock is in some kind of a hot condition. For example, the vent in the

dock may be blocked or the dock is working in a high working-temperature environment (> 35C), etc,. Please eliminate these

abnormal conditions from the dock. If you do not eliminate the abnormal condition, in a worst-case situation, the dock will shut

down through the over-temperature protection mechanism. Once this happens, please un-plug the Type-C cable from the system

and remove the dock’s power. Then, plug in the dock power to recover the dock back online.

This is a normal condition. First time plugging in of the dock’s AC adapter will trigger the fan to rotate, but it will subsequently turn

off very soon.

The dock fan is designed with two different rotate speeds. Normally, the dock will work on low fan speed. If you put the dock in a

heavy loading, or in a high working-temperature environment, the dock fan may have a chance to work at a high speed. But, this is

normal and the fan will work at a low/high speed depending on the work loading.

The Dell Precision Dual USB Type-C Thunderbolt 3 Dock - TB18DC can charge your mobile or power bank even without being

connected to the system. Just make sure your dock is connected to external power. The dock fan will rotate automatically if the

dock gets too warm. This is normal working condition.

This is for Thunderbolt security. You are asked to approve a Thunderbolt device because the Thunderbolt Security level on your

unit is set to “User Authorization” or “Secure Connect” in the BIOS Setup. You will not see this page if the Thunderbolt Security

level on your system is set to “No Security” or “DisplayPort Only”. Also, if you checked “Enable Thunderbolt Boot Support” in the

BIOS Setup and power-on the system with the TB18DC dock attached, you will not see this page because the Security level is

overridden to “No Security” in this case. When you are asked to approve a Thunderbolt device, you may select “Always Connect”

if you do not have any security concerns to always allow the Thunderbolt device connection to your system. Or you may select

“Connect Only Once” or “Do Not Connect” if you do have concerns.

Security is always Dell’s highest priority. We ship our systems with “Security level - User Authorization” setting by default. This

allows our customers to review the Thunderbolt security conditions of their systems so they can make selections accordingly.

However, this also means the Thunderbolt dock and the devices attached to it will need to pass Thunderbolt driver security

permission checking to get it connected and initialized. This normally means some extra time is needed before these devices can

be accessed by users.

When a new device is plugged in, the USB hub driver notifies the Plug and Play (PnP) manager that a new device was detected.

The PnP manager queries the hub driver for all of the device's hardware IDs and then notifies the Windows OS that a new device

needs to be installed. In this scenario, the user will see a hardware installation window.

/en-us/windows/hardware/drivers/install/step-1--the-new-device-is-identified

/en-us/windows/hardware/drivers/install/identifiers-for-usb-devices

9Why do the peripheral devices, which are connected to the dock station, become unresponsive after recovering from a power

loss?

•Our Thunderbolt dock is designed to operate on AC power only and it does not support system power source back (powered by

system Type-C port). A power loss event will make all devices on the dock fail to work. Even when you restore the AC power, the

dock may still not function properly because the dock still needs to negotiate proper power contract with the system's Type-C

port and establish a system EC-to-dock-EC connection. A Type-C cable re-plug is needed to initiate the power contract

negotiation and establish system EC-to-dock-EC virtual Inter-Integration Circuit (I2C) connection. As a result, after a power loss,

the user needs to unplug the Type-C cable, re-plug in the AC power, and then re-plug-in the Type-C cable to the system to restore

dock back to a normal working condition.

The dock does not work after high-speed fan noise.

3I hear a fan noise when I plug in the dock’s AC adapter.

•

4I hear a loud fan noise. What’s wrong?

•

5What is the charging station feature?

•

6Why am I asked to approve Thunderbolt Devices after the Windows logon and what should I do?

•

7Why does it take a long time for the system to recognize all the peripheral devices which are attached to the docking station?

•

8Why does the hardware installation window show up when I plug in a USB device to the docking stations ports?

•

28Frequently asked questions

Frequently asked questions29

Troubleshooting the Dell Precision Dual USB

Type-C Thunderbolt 3 Dock-TB18DC

Symptoms and Solutions

Symptoms

1. No video on the monitors attached to the High Definition

Multimedia Interface (HDMI), mini-DisplayPort (mDP) port, or

DisplayPort (DP) port on the docking station.

Suggested solutions

•

Ensure that the latest BIOS and drivers for your computer and

the docking station are installed on your computer.

Make sure your computer is connected to the docking station

securely. Try to disconnect and reconnect the docking station

to the notebook computer.

Disconnect both ends of the video cable and check for

damaged/bent pins. Securely re-connect the cable to the

monitor and docking station.

Make sure the video cable (HDMI, mDP or DisplayPort) is

connected properly to the monitor and the docking station.

Ensure to select the correct video source on your monitor (refer

to your monitor’s documentation for more information about

changing the video source).

Check the resolution settings on your computer. Your monitor

may support higher resolutions than what the docking station is

able to support. Please see the Display Resolution Table for

more information on maximum resolution capacity.

If your monitor is connected to the docking station, the video

output on your computer may be disabled. You can enable the

video output using the Intel Graphics Control Panel or refer to

the User Guide of your computer.

If only one monitor is shown, while the other is not, go to the

Intel Graphics Control Panel, and under Multiple Displays,

select the output for the second monitor.

If three monitors are connected to the docking station, then the

docking station will only support a maximum of two external

monitors. Refer to the User Guide of your docking station for

information on how to select and activate the desired monitors.

Try with a different monitor and cable that is known to be good,

if possible.

Reset the monitor to Factory Defaults. Refer to the User Guide

of your monitor for more information on how to reset the

monitor to factory defaults.

Ensure that the video cable (HDMI, mDP or DisplayPort) is

connected securely to the monitor and the docking station.

Disconnect and reconnect the monitor/s from the docking

station.

First power off the docking station by disconnecting the Type-C

cable and then removing the power adapter from the dock.

Then, power on the docking station by connecting power

adapter to the dock before connecting the Type-C cable to your

computer.

•

2. The video on the attached monitor is distorted or flickering.

•

30Troubleshooting the Dell Precision Dual USB Type-C Thunderbolt 3 Dock-TB18DC

Symptoms

3. The video on the attached monitor is not displaying as an

Extended Monitor.

Suggested solutions

•

Ensure that the Intel HD Graphics driver is installed in the

Windows Device Manager.

Open the Intel HD Graphics Control Panel and go to Multiple

Displays control to set the display to the extended mode.

Ensure that the latest BIOS and drivers for your computer and

the docking station are installed on your computer.

If your BIOS Setup has a Audio Enabled/Disabled option, make

sure it is set to Enabled.

Ensure the correct playback device is selected on the notebook

computer.

Try to re-plug the audio cable to the external speaker output on

the docking station.

First power off the docking station by disconnecting the Type-C

cable and then removing the power adapter from the dock.

Then, power on the docking station by connecting the power

adapter to the dock before connecting the Type-C cable to your

computer.

Ensure that the latest BIOS and drivers for your computer and

the docking station are installed on your computer.

If your BIOS Setup has a USB Enabled/Disabled option, make

sure it is set to Enabled.

Verify if the device is detected in Windows Device Manager and

that the correct device drivers are installed.

Ensure that the docking station is connected securely to the

notebook computer. Try to disconnect and reconnect the

docking station to the computer.

Check the USB ports. Try plugging the USB device into another

port.

First power off the docking station by disconnecting the Type-C

cable and then removing the power adapter from the dock.

Then, power on the docking station by connecting the power

adapter to the dock before connecting the Type-C cable to your

computer.

Dell Dock and Dell Thunderbolt Dock do not support HDCP

content.

Ensure that the latest BIOS and drivers for your computer and

the docking station are installed on your computer.

Ensure that the RealTek Gigabit Ethernet Controller is installed

in the Windows Device Manager.

If your BIOS Setup has a LAN/GBE Enabled/Disabled option,

make sure it is set to Enabled

Ensure that the Ethernet cable is connected securely on the

docking station and the hub/router/firewall.

Check the status LED of the Ethernet cable to confirm

connectivity. Re-seat both ends of the Ethernet cable if the

LED is not lit.

First power off the docking station by disconnecting the Type-C

cable and then removing the power adapter from the dock.

Then, power on the docking station by connecting the power

adapter to the dock before connecting the Type-C cable to your

computer.

Make sure the TB18DC is connected to AC power.

Make sure the laptop is connected with the docking station. Try

to disconnect and re-connect again with the docking station.

4. The audio connector is not functioning or there is a lag in the

audio.

•

5. The USB ports are not functioning on the docking station.

•

6. The High-Bandwidth Digital Content Protection (HDCP) content

•

is not displayed on the attached monitor.

7. The LAN port is not functioning.

•

8. Cable LED is not ON after it is connected to your host.

•

Troubleshooting the Dell Precision Dual USB Type-C Thunderbolt 3 Dock-TB18DC31

Symptoms

9. USB port has no function in a pre-OS environment.

Suggested solutions

•

If your BIOS has an USB/Thunderbolt Configuration page,

please make sure the following options are checked:

1. Enable USB Boot Support

2. Enable External USB Port

3. Enable Thunderbolt Boot Support

If your BIOS has an integrated NIC page, please select Enabled

w/PXE.

If your BIOS Setup on your computer has an USB/Thunderbolt

Configuration page, please make sure the following options are

checked:

1. Enable USB Boot Support

2. Enable Thunderbolt Boot Support

If your BIOS has an USB/Thunderbolt Configuration page,

please make sure the following options are checked:

1. Enable USB Boot Support

2. Enable External USB Port

3. Enable Thunderbolt Boot Support

1. Make sure the Dell Thunderbolt Dock TB18DC is connected

properly to its own adapter (240 W).

2. Make sure the cable LED of your docking station is ON.

3. Disconnect and then re-connect the Thunderbolt 3 (Type-C)

cable to your computer.

Thunderbolt Boot Support is by default disabled in BIOS Setup

on your Dell computer. With such default setting the docking

station and the peripherals connected to the docking station do

not work in a pre-OS environment.

If the BIOS Setup on your computer has an USB/Thunderbolt

Configuration page, check the following options to enable

docking station function in a pre-OS environment:

Enable External USB Port

Enable Thunderbolt Boot Support

Make sure the docking station is connected properly to its own

power adapter. Computer requiring more than 130 W power

input must also be connected to their own power adapter for

charging and operating at full performance.

First power off the docking station by disconnecting the Type-C

cable and then removing power adapter from the dock. Then,

power on the docking station by connecting the power adapter

to the dock before connecting the Type-C cable to your

computer.

The docking connector has become unseated from the

system's Thunderbolt ports. Please disconnect the docking

cable from the system, wait for 15 seconds or more, and then

dock again.

The docking connector has become unseated from the

system's Thunderbolt ports. Please reseat docking connector.

10. PXE boot on dock does not function.

•

11. USB Boot does not function.

•

12. AC Adapter is displayed as “Not Installed” in the Battery

Information page of the Dell BIOS Setup when the Thunderbolt 3

(Type-C) cable is connected.

•

13. Peripherals connected to the docking station do not work in a

pre-OS environment.

•

14. Alert message “You have attached an undersized power adapter

•

to your system” is displayed when the docking station is connected

to your computer.

•

15. Undersized power adapter warning message displayed and cable

•

LED is off.

16. No external display. USB or data and cable LED is off.

•

32Troubleshooting the Dell Precision Dual USB Type-C Thunderbolt 3 Dock-TB18DC

SymptomsSuggested solutions

17. When system or dock is moved the cable LED turns off.

•Avoid moving the system/dock when the docking cable is

connected to the system.

Troubleshooting the Dell Precision Dual USB Type-C Thunderbolt 3 Dock-TB18DC33

Getting help

Contacting Dell

NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip,

bill, or Dell product catalog.

Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services

may not be available in your area. To contact Dell for sales, technical support, or customer service issues:

Go to /support.

Select your support category.

Verify your country or region in the Choose a Country/Region drop-down list at the bottom of the page.

Select the appropriate service or support link based on your need.

34Getting help