StarTech.com TB3DK2DPW User manual

Manual Revision: 09/27/2016
For the latest information, technical specications, and support for
this product, please visit www.startech.com
FR: Guide de l’utilisateur - fr.startech.com
DE: Bedienungsanleitung - de.startech.com
ES: Guía del usuario - es.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
IT: Guida per l’uso - it.startech.com
TB3DK2DPW
TB3DK2DPWUE
Thunderbolt 3 Dual-4K Docking Station for
Laptops - Windows Only
*actual product may vary from photos

Instruction manual
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment o and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit dierent from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
Changes or modications not expressly approved by StarTech.com could void the user’s
authority to operate the equipment.
Industry Canada Statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du Canada.
CAN ICES-3 (B)/NMB-3(B)
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and other
protected names and/or symbols of third-party companies not related in any way to
StarTech.com. Where they occur these references are for illustrative purposes only and do not
represent an endorsement of a product or service by StarTech.com, or an endorsement of the
product(s) to which this manual applies by the third-party company in question. Regardless
of any direct acknowledgement elsewhere in the body of this document, StarTech.com hereby
acknowledges that all trademarks, registered trademarks, service marks, and other protected
names and/or symbols contained in this manual and related documents are the property of
their respective holders.

Instruction manual
i
Table of Contents
Introduction............................................................................................1
Packaging contents.................................................................................................................................. 1
System requirements............................................................................................................................... 1
Product diagram ....................................................................................3
Front view .................................................................................................................................................... 3
Rear view...................................................................................................................................................... 3
About Thunderbolt 3.............................................................................4
About DP alt mode (DisplayPort alternative mode)..................................................................... 4
Thunderbolt temperature...................................................................................................................... 4
About USB 3.0 and USB 3.1 Gen 1 .......................................................5
About the docking station USB-C ports .............................................5
About the docking station ports .........................................................5
Install the docking station....................................................................6
Power the docking station..................................................................................................................... 6
Connect the docking station ................................................................................................................ 6
Install the drivers....................................................................................................................................... 6
Charge a device .....................................................................................7
Congure a display device....................................................................7
Connect a display to the DisplayPort port....................................................................................... 7
Connect a display to the Thunderbolt 3 USB-C port.................................................................... 8
Connect multiple Thunderbolt 3 displays in a daisy chain........................................................ 8
Supported video resolutions ...............................................................9

Instruction Manual
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Bandwidth allocation ...........................................................................9
Troubleshooting.....................................................................................11
Technical support...................................................................................12
Warranty information............................................................................12

Instruction manual
1
Introduction
The TB3DK2DPW and TB3DK2DPWUE integrate Thunderbolt™ 3 technology to oer
throughput at speeds up to 40Gbps. It lets you connect dual-4K monitors (60Hz) to
your Windows® based laptop. Plus, the dock oers a range of input and output ports,
such as DisplayPort, Gigabit Ethernet, USB fast-charge, USB 3.0, USB-C™, headphone,
microphone, and Thunderbolt 3.
Packaging contents
• 1 x Thunderbolt 3 dual-4K docking station for laptops
• 1 x Thunderbolt 3 cable - 40Gbps - 0.5 m
• 1 x universal power adapter
• 1 x power cord (NA) - 2 x power cords (UK/EU) for TB3DK2DPWUE
• 1 x instruction manual
System requirements
• Host laptop with an available Thunderbolt 3 port
• Available AC electrical outlet
• DisplayPort equipped display(s) with cable(s) as needed (for additional external
display)
• Thunderbolt 3 equipped display(s) with cable(s) as needed (for additional external
display)
Note: To connect a second display, you must use one of the docking station’s
Thunderbolt 3 USB-C ports. Additional adapter purchases might be required to use the
docking station with HDMI, DVI, or VGA displays. See the Congure a display device
section for further details.
• A 4K-capable display is required to achieve 4096 x 2160p resolution (4K is also
known as 4K x 2K)
• A 5K-capable display is required to achieve 5120 x 2880p resolution
• Any of the following operating systems:
• Windows 10 (32-bit or 64-bit)
• Windows 8 / 8.1 (32-bit or 64-bit)
• Windows 7 (32-bit or 64-bit)
Notes:
• The docking station only supports Windows operating systems.

Instruction Manual
2
• Video output capabilities are dependent on the video card and hardware
specications of your connected host laptop.
Operating system requirements are subject to change. For the latest requirements,
please visit www.startech.com/TB3DK2DPW or www.startech.com/TB3DK2DPWUE.

Instruction manual
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Product diagram
Front view
Rear view
USB 3.0 fast-charge
and sync port
USB-C (USB 3.0 - 5Gbps)
downstream (data only)
port
Gigabit
RJ45 port DC input
port
USB 3.0 port
DisplayPort
(DP++) port
3.5 mm
audio output
port
3.5 mm
microphone
input port
Thunderbolt 3
USB-C port

Instruction manual
4
About Thunderbolt 3
Thunderbolt 3 technology uses the USB-C connector, with bandwidth up to 40Gbps. It
supports USB 3.1, DisplayPort 1.2, and PCI Express 3.0.
Thunderbolt technology supports both video and data throughput. However, it
prioritizes video bandwidth to help ensure seamless display performance. The
performance of the remaining dock functions depends entirely on your display
conguration.
Thunderbolt 3 products must be used with Thunderbolt 3 cables.
Your computer’s Thunderbolt 3 ports might not function properly until you update one
or more of the following on your computer:
• BIOS
• Thunderbolt rmware
• Thunderbolt 3 controller drivers
• Thunderbolt 3 software
The required updates will vary depending on your computer.
For an up-to-date list of aected computers and instructions, visit http://
thunderbolttechnology.net/updates. If your manufacturer isn’t listed on the
Thunderbolt website, contact your manufacturer.
About DP alt mode (DisplayPort alternative mode)
DP alt mode is a specication that allows a DisplayPort video signal to transfer over
USB-C. It enables the use of the USB-C interface for DisplayPort signals. Thunderbolt
3 supports the full USB-C standard, including support for DP alt mode. Because the
docking station supports DP alt mode, you can connect Thunderbolt 3 or USB-C based
video devices, cables, or adapters to the secondary Thunderbolt 3 port on the rear of
the docking station.
Thunderbolt temperature
Due to the high-performance of Thunderbolt technology, Thunderbolt products
sometimes generate more heat than traditional hardware. Therefore, it’s normal for
the docking station to warm up when in use. As such, it’s recommended that you
don’t place your laptop on the docking station’s surface, as doing so will result in even
higher temperatures.
These higher temperatures do not represent a safety hazard to users or to hardware.

Instruction Manual
5
About USB 3.0 and USB 3.1 Gen 1
USB 3.0 is also known as USB 3.1 Gen 1. This connectivity standard oers speeds up
to 5Gbps. Any mention of USB 3.0 in this manual or on the StarTech.com website
for TB3DK2DPW or TB3DK2DPWUE refers to the 5Gbps USB 3.1 Gen 1 standard. Any
mention of USB 3.1 Gen 2 refers to the 10Gbps Gen 2 standard.
About the docking station USB-C ports
Not all USB-C ports support the full functionality of the USB Type-C™ standard. Some
ports might only provide data transfer, and might not support video (DP alt mode). The
docking station includes two USB-C ports:
• Front-panel USB-C port: This is not a Thunderbolt 3 port. It’s a USB-C port that lets
you connect peripherals using USB 3.0 (5Gbps) technology. This port supports data
throughput only. The port does not support DP alt mode or USB power delivery.
• Rear panel Thunderbolt 3 USB-C port(s): These USB-C ports are Thunderbolt 3
ports with a USB-C connector. One port is for connection to a host laptop, while the
second can be used as a Thunderbolt 3 port or a USB-C port. When used as a USB-C
port, it lets you connect peripherals using USB 3.1 Gen 2 (10Gbps) technology. This
port supports DP alt mode, but does not support USB power delivery.
Note: Either of the Thunderbolt 3 USB-C ports on the docking station can be used to
connect to your host laptop.
About the docking station ports
The USB-A (USB 3.0) port located at the back of the docking station is a standard USB
3.0 throughput port. When the dock is connected to a host laptop, this port provides a
trickle charge to a selection of USB-charged devices.
The front USB-A (USB 3.0) port is compliant with Battery Charging Specication
Revision 1.2 (BC1.2), which means that you can use the port to connect and charge a
device faster than you can using a traditional standard USB 3.0 port.
This front USB 3.0 port can fast-charge a connected device even when the dock isn’t
connected to a host laptop. When the docking station is connected to a host laptop,
the front USB 3.0 port functions as a Charging Downstream Port (CDP), which has
simultaneous charge and sync capabilities.
The provided power adapter must always be connected to the docking station in order
to charge a device using the front-panel USB fast-charge port.

Instruction Manual
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Install the docking station
The docking station is natively supported when connected to a compatible operating
system (see the System requirements section for supported operating systems).
It should automatically detect and install the required drivers once connected to a
Thunderbolt 3 port on your host laptop.
Power the docking station
1. Select the appropriate power cord for your region and connect it to the power
adapter.
2. Connect the power adapter to an AC electrical outlet and then to the docking
station’s DC IN (power input) port. The docking station should now be receiving
power.
Connect the docking station
1. Connect your external display(s) to the docking station (example, DisplayPort or
Thunderbolt 3 displays).
Note: See the Congure a display device section for dual-display conguration
requirements.
2. Connect your peripherals to the docking station (example, USB devices, RJ 45
network).
3. Connect the provided Thunderbolt 3 cable to a Thunderbolt 3 port on your host
laptop and to one of the Thunderbolt 3 USB-C ports on the docking station.
Note: Either of the Thunderbolt 3 USB-C ports on the docking station can be used to
connect to your host laptop.
Install the drivers
Once the docking station is powered and connected to your host laptop, the required
drivers should automatically install.
You might see a pop-up message requesting permission to allow the docking station
to connect to your computer. If you see this pop-up message, do the following:
1. Click on the pop-up message.
2. On the following prompt, select Always Connect from the drop-down list.
3. Click OK. If required, follow any other on-screen instructions to complete the
installation.
The drivers can also be found under the Support tab on our website at
www.startech.com/TB3DK2DPW or www.startech.com/TB3DK2DPWUE.

Instruction Manual
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Charge a device
If you’re only using the front USB 3.0 port to charge a device, a connection to a host
laptop isn’t required.
• To charge a device, connect it to the USB 3.0 port located on the front of the
docking station.
Note: This front USB 3.0 port can only fast-charge connected devices that comply with
USB Battery Charging Specication Revision 1.2.
Congure a display device
Use your Windows operating system to adjust display settings for multiple monitors.
Your laptop hardware must support dual external displays through its Thunderbolt 3
port.
Connect a display to the DisplayPort port
The docking station’s DisplayPort connection supports DisplayPort 1.2, as well as
DP++. Because the port supports DP++, you can use passive adapters or cables to
connect dierent types of monitors to the DisplayPort port.
Connect a display to the Thunderbolt 3 USB-C port
You can also connect a display (or a display adapter) to one of the docking station’s
Thunderbolt 3 USB-C ports. One of the docking station’s Thunderbolt 3 ports must
remain connected to your host laptop.
Type of Display Adapter Needed (sold separately)
DisplayPort None
HDMI DisplayPort to HDMI 4K Audio / Video Converter (DP2HD4KS)
DVI DisplayPort to DVI Adapter (DP2DVI2)
VGA DisplayPort to VGA Adapter (DP2VGA2)
Type of Display Adapter Needed (sold separately)
DisplayPort USB-C to DisplayPort Adapter Cable - 4K 60Hz
(CDP2DPMM1MB)
HDMI USB-C to HDMI Adapter - 4K 60Hz (CDP2HD4K60)
DVI USB-C to DVI Adapter (CDP2DVI)
VGA USB-C to VGA Adapter (CDP2VGA)

Instruction manual
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Visit www.StarTech.com for a range of USB-C video adapters and cables.
Note: The docking station lets you connect two 4K displays, or a single 5K display.
Video adapters sometimes limit the maximum available resolution. Check the
documentation of the video adapter to determine its maximum supported resolution.
Connect multiple Thunderbolt 3 displays in a daisy chain
You can also set up dual displays using multiple Thunderbolt 3 displays in a daisy-chain
conguration.
Example: You can connect a Thunderbolt 3 display to the Thunderbolt 3 USB-C port
port on the docking station. You can then connect another Thunderbolt 3 device, such
as a second Thunderbolt 3 display, through the rst Thunderbolt 3 display.
Supported video resolutions
Thunderbolt technology supports both video and data throughput. However, it
prioritizes video bandwidth to help ensure seamless display performance. The
performance of the remaining dock functions depends entirely on the display
conguration you used.
The docking station supports the follow maximum resolutions:
Number of
Displays Ports Maximum Resolution
1 DisplayPort port 4096 x 2160p (60Hz)
1Thunderbolt 3 USB-C
port 5120p x 2880p (60Hz)
2
DisplayPort port and
Thunderbolt 3 USB-C
port
4096 x 2160p (60Hz) and 4096 x
2160p (60Hz)
• Depending on the conguration and the supported resolutions of your connected
monitor(s), the docking station can support video resolutions lower than specied
above.
• In a multi-display conguration, set the refresh rates on each of your connected
monitors to the same values, otherwise your monitors might not properly display.
• Video output capabilities are dependent on the video card and hardware
specications of your connected host laptop.

Instruction Manual
9
Bandwidth allocation
Thunderbolt technology carries video and data bandwidth, and it prioritizes video
bandwidth to help ensure seamless display performance. The performance of the
remaining dock ports (for example, the USB 3.0 ports) depends entirely on the display
and I/O (input and output) conguration that you have used.
When multiple high-resolution displays are connected, the docking station needs to
allocate additional bandwidth to the displays, and the extra bandwidth is reallocated
from the other I/O ports on the docking station. In this situation there is less
bandwidth available for the remaining ports (for example, the USB 3.0 ports).
The bandwidth allocation table outlines the approximate download bandwidth
allocation values. The allocation amount depends on the number and the resolution of
your connected displays.
Video and I/O
Conguration
DisplayPort
Resolution
Thunderbolt
3 USB-C
Resolution
I/O Bandwidth Remaining
Data only
(No Displays) N/A N/A Download: 22Gbps Upload: 22Gbps
DisplayPort
(Single Display
- 4K)
4096 x
2160p
(4K - 60Hz)
N/A Download: 22Gbps
Upload: 22Gbps
Thunderbolt 3
USB-C
(Single Display
- 4K)
N/A 4096 x 2160p
(4K - 60Hz)
Download: 22Gbps
Upload: 22Gbps
Thunderbolt 3
USB-C
(Single Display
- 5K)
N/A 5120p x 2880p
(5K - 60Hz)
Download: 18Gbps
Upload: 22Gbps
DisplayPort and
Thunderbolt 3
USB-C
(Two Displays -
Dual-4K )
4096 x
2160p
(4K - 60Hz)
4096 x 2160p
(4K - 60Hz)
Download: 8Gbps
Upload: 22Gbps
• The bandwidth values are approximate and depend on several variables including
the number, type, resolution, and refresh rate of your connected display(s).
• When connecting a display to one of the Thunderbolt 3 USB-C ports, a USB-C video
adapter may be required, depending on the input of your display.

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Troubleshooting
If you are experiencing issues, there are some quick tests that you can complete to
narrow down the source of the issue.
Update your computer to use Thunderbolt 3
Visit http://thunderbolttechnology.net/updates and look for your computer in the list
of aected computers. If your computer is listed, then you must update your computer
for its Thunderbolt 3 ports to function properly. To update your computer, follow the
instructions on the website or contact your manufacturer.
Verify that your components are Thunderbolt compliant
1. Make sure that you are using Thunderbolt compliant cables. First-generation
Thunderbolt and Thunderbolt 2 use the same connector type as Mini DisplayPort.
If you are using a Mini DisplayPort cable that is not Thunderbolt compliant, replace
the cable with one that is compliant.
2. Make sure that the port on your computer is Thunderbolt 3 compliant. Thunderbolt
3 uses the USB-C connector type, but not all USB-C connectors are compatible with
Thunderbolt 3. If you are using a USB-C port that is not Thunderbolt 3 compliant,
switch to a port that is Thunderbolt 3 compliant.
3. Make sure that your peripheral is Thunderbolt compliant. If you’re not sure, check
with the manufacturer.
Replace the Thunderbolt cable
• Use the Thunderbolt peripheral with a dierent cable that is Thunderbolt compliant.
Test the Thunderbolt peripheral
1. Use a second Thunderbolt peripheral, and see if it works. Ideally, the second
peripheral is one that you know works in other setups. If the second peripheral
works in the current setup, then there is probably an issue with the rst Thunderbolt
peripheral.
2. Use the Thunderbolt peripheral with a second setup. If it works in the second setup,
then there is probably an issue with the rst setup.

Instruction manual
11
Technical support
StarTech.com’s lifetime technical support is an integral part of our commitment to
provide industry-leading solutions. If you ever need help with your product, visit
www.startech.com/support and access our comprehensive selection of online tools,
documentation, and downloads.
For the latest drivers/software, please visit www.startech.com/downloads
Warranty information
This product is backed by a two-year warranty.
StarTech.com warrants its products against defects in materials and workmanship
for the periods noted, following the initial date of purchase. During this period,
the products may be returned for repair, or replacement with equivalent
products at our discretion. The warranty covers parts and labor costs only.
StarTech.com does not warrant its products from defects or damages arising from
misuse, abuse, alteration, or normal wear and tear.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their
ocers, directors, employees or agents) for any damages (whether direct or indirect,
special, punitive, incidental, consequential, or otherwise), loss of prots, loss of business,
or any pecuniary loss, arising out of or related to the use of the product exceed the
actual price paid for the product. Some states do not allow the exclusion or limitation
of incidental or consequential damages. If such laws apply, the limitations or exclusions
contained in this statement may not apply to you.

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