Product ID: TB3DKM2DP
The bus-powered Thunderbolt 3™ docking station connects to dual 4K DisplayPort displays, Gigabit Ethernet and a USB 3.0 (Type-A) port. Compatible with macOS and Windows®, it’s the ideal accessory for your Thunderbolt 3 laptop and for flexible setup, the attached USB-C cable has an extended length of (7.9 in. | 20 cm).
Great for editing 4K video or other Ultra HD tasks, this portable dual DisplayPort docking station supports 40Gbps of throughput and 4K resolution at 60Hz on two DisplayPort monitors, through a single Thunderbolt 3 port.
Connect your laptop to:
Simply connect the TB3 dock to your laptop with included TB3 cable and start working immediately. No time-consuming driver installations are required.
To enhance your productivity, the Gigabit Ethernet port (with PXE Boot and Wake-on-LAN support) ensures reliable wired network access. A USB 3.0 Type-A port, with ample space around it, lets you connect a USB device, like a flash drive, for easy file access.
The TB3DKM2DP is Thunderbolt Certified, and backed by a StarTech.com 3-year warranty and free lifetime technical support.
|Warranty Information||Warranty||3 Years|
|Connector(s)||1 - Connector Type(s)||Thunderbolt™ 3 USB-C (24-pin) (40Gbps)|
|2 - Connector Type(s)||DisplayPort (20 pin)|
|1 - Connector Type(s)||USB Type-A (9 pin) USB 3.0 (5 Gbps)|
|Environmental||Operating Temperature||5°C to 35°C (41°F to 95°F)|
|Storage Temperature||-40°C to 70°C (-40°F to 158°F)|
|Humidity||5~95% RH (Non-condensing)|
|Bus Type||Thunderbolt 3|
|Industry Standards||Thunderbolt 3
IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
USB 3.0 - Backward compatible with USB 2.0 and 1.1
|Chipset ID||Intel - Alpine Ridge JHL6540
Intel - WGI210AT
Texas Instruments - TPS65983
ASMedia - ASM1042A
|Packaging Information||Shipping (Package) Weight||256.0 g [9.0 oz]|
|Package Length||20.8 cm [8.2 in]|
|Package Width||14.5 cm [5.7 in]|
|Package Height||38.0 mm [1.5 in]|
|Performance||Maximum Data Transfer Rate||40 Gbps (Thunderbolt 3)
5 Gbps (USB 3.0)
2 Gbps (Ethernet; Full-Duplex)
|Maximum Digital Resolutions||Dual 4K displays - DisplayPort 4096 x 2160p @ 60Hz / 3840 x 2160p @ 60Hz
Single 5K display - DisplayPort 5120 × 2880 @ 60Hz
|Type and Rate||Thunderbolt 3 - 40 Gbit/s|
|Compatible Networks||10/100/1000 Mbps|
|Full Duplex Support||Yes|
|Physical Characteristics||Color||Black & Gray|
|Cable Length||20 cm [7.9 in]|
|Product Length||25.3 cm [10.0 in]|
|Product Width||12.2 cm [4.8 in]|
|Product Height||20.0 mm [0.8 in]|
|Weight of Product||145.8 g [5.1 oz]|
|Software||OS Compatibility||Windows® 7, 8, 8.1, 10
macOS 10.12 - 10.15, 11.0
|Special Notes / Requirements||System and Cable Requirements||Thunderbolt 3 equipped computer with a Thunderbolt 3 port.|
|Note||A 4K-capable display is required to achieve 4K x 2K resolution (4K is also known as 4K x 2K).|
|A 5K-capable DisplayPort display is required to achieve 5120 × 2880 resolution.|
|Certain monitors may be limited to 4K at 30Hz when connecting through DisplayPort. These monitors include the following models: Dell P2715Q, Viewsonic VX2475Smhl-4K, Philips 288P6LJEB, LG 31MU97C-B, Asus PB287Q (these models will need to be set to 4K at 30Hz).|
|Active adapters are required if adapting DisplayPort to HDMI/DVI/VGA monitors.|
|To convert from DP to DVI (or HDMI, VGA), an active adapter is required, such as DP2VGA, DP2VGA2, DP2VGA3, DP2HD4KS or DP2HD4K60S|
|MacBook Air and MacBook Pro systems using the new Apple M1 chip support only a single external display over the Thunderbolt 3 ports, even when connected to a Thunderbolt 3 docking station with more than one video output. This single monitor limitation does not affect Intel-based Macs with Thunderbolt 3.|
|What's in the Box||1 - Included in Package||Thunderbolt 3 Dock|
Connect a DVI monitor to a single-mode DisplayPort output from your computer
Connect a VGA monitor to a DisplayPort-equipped PC
Connect your DP computer to an HDMI display using this converter, which supports UHD resolutions up to 4K at 60Hz
Connect your DVI Dual Link display to a DisplayPort® video source, for high resolution applications
Active adapters are required if adapting DisplayPort to HDMI or DVI monitors. Active adapters use additional chips to make the conversion inside the adapter. Passive DisplayPort to HDMI or DVI will not work with this device.
If you set your display to [email protected] and connect a display to the DisplayPort output on the laptop docking station, your display may flicker. This issue only affects certain monitors and is a result of an interoperability issue between the hardware used in the display and the docking station. This issue is not specific to StarTech.com docking stations.
To resolve this issue, try any of the following:
If your computer is not detecting your Thunderbolt™ 3 device, try the following:
For more information about how to update the software, firmware, drivers, and BIOS or UEFI, refer to the website of the manufacturer of the Thunderbolt 3 host device. The following website includes links to some of the manufacturers of Thunderbolt 3 host devices: https://thunderbolttechnology.net/updates. If the manufacturer of your host device is not listed, you should contact the manufacturer or refer to their website for more information.
For more information about how to check which version of the Thunderbolt software and firmware you are currently using, see the following FAQ: https://www.startech.com/faq/thunderbolt-3-check-software-firmware.
For more information about Thunderbolt 3 host system and motherboard compatibility, refer to the Thunderbolt 3 Compatibility and Troubleshooting guide.
If you are only getting a single display to work with your Thunderbolt™3 device, make sure that your Thunderbolt 3 host device can support two separate DisplayPort lines over Thunderbolt 3.
While Thunderbolt 3 supports dual monitors over a single connection, not all Thunderbolt 3 host devices are designed to meet this requirement. If your Thunderbolt 3 host device does not meet this requirement, you cannot troubleshoot this issue with software, firmware, or driver updates, and you cannot use this device to achieve dual displays over Thunderbolt 3. If you are not sure whether your Thunderbolt 3 host device supports dual monitors, contact your Thunderbolt 3 host device manufacturer.
If you confirmed that your Thunderbolt 3 host device does support dual monitors and you are only seeing a single display, see the following FAQ: https://www.startech.com/faq/thunderbolt-3-update-software-firmware.
When you connect a Thunderbolt™ device to any Windows operating system that can support Thunderbolt 3, a pop-up message appears. To use your Thunderbolt 3 device do one of the following:
Caution! If you select Do Not Connect, only video will pass through on your Thunderbolt 3 device.
If you accidentally set a Thunderbolt™3 device to not connect to your computer when prompted by the system, you can force the software to prompt you again for authentication. To do so, complete the following:
To use a Thunderbolt 3 adapter to output to a display at 60Hz, your monitor must support the refresh rate and you need to set the monitor to work at 60Hz. By default, most monitors are set to DP1.1, which will not work with this Thunderbolt 3 device when you use a display at 60Hz. In most cases, you need to set your monitor's DisplayPort settings to DP1.2.
To resolve this issue, use the buttons on your monitor to change the DisplayPort settings to DP1.2. For more information about changing your monitor settings, refer to the website of the manufacturer of your monitor.
To arrange extended displays on Windows 10, complete the following.
To arrange extended displays on macOS, complete the following.
When you connect a Thunderbolt™ device to any Windows operating system that can support Thunderbolt 3, a pop-up message appears. To use your device, complete the following:
If you accidentally set your Thunderbolt device to Do Not Connect in step three above, refer to the following FAQ: https://www.startech.com/faq/thunderbolt-3-denied-authentication.
You can use the Thunderbolt™ software to manage your Thunderbolt 3 devices on a computer running a version of Windows. To manage your Thunderbolt 3 devices, complete the following:
Thunderbolt 3 uses the USB-C connector, but not all host connections, cables, and devices with a USB-C connector support Thunderbolt 3. This means that a USB-C device is compatible with a Thunderbolt 3 host connection, but a Thunderbolt 3 device is not compatible with a USB-C host connection. Therefore, it is essential to know whether you have a USB-C or a Thunderbolt 3 host, cable, or device.
To determine if your component is a Thunderbolt 3 device, look for the Thunderbolt 3 symbol. USB-C devices do not include this symbol. For more information about USB-C, see the following FAQ: http://www.startech.com/faq/usb-c-port-capabilites
Thunderbolt™ 3 is the latest version of the Thunderbolt standard for connecting computers and electronic devices. It is capable of the following:
Thunderbolt 3 uses the USB-C connector, but not all host connections, cables, and devices with a USB-C connector support Thunderbolt 3. This means that a USB-C device is compatible with a Thunderbolt 3 host connection, but a Thunderbolt 3 device is not compatible with a USB-C host connection. Therefore, it is important to know whether you have a USB-C or a Thunderbolt 3 host, cable, or device.
To determine if your component is a Thunderbolt 3 device, look for the Thunderbolt 3 symbol (shown below). USB-C devices do not include this symbol. For more information about USB-C, see the following FAQ: https://www.startech.com/faq/usb-c-port-capabilites.
Thunderbolt symbol: https://sgcdn.startech.com/005329/media/products/gallery_large/TBLT3MMXM.B.jpg.
If you use an adapter, Thunderbolt 3 host connections are compatible with Thunderbolt 1 and Thunderbolt 2 devices. You can use the StarTech.com TBT3TBTADAP to make a Thunderbolt 3 host connections backwards compatible.
Thunderbolt 3 devices are not backwards compatible with Thunderbolt 1 and Thunderbolt 2 host connections.
Although the Thunderbolt™ 3 standard is capable of data transfer speeds up to 40Gbps, not every cable can support this bandwidth. For example, cables over a certain length or made with certain materials are only capable of data transfer speeds up to 20Gbps.
To confirm the capability of your Thunderbolt 3 cable, refer to the information provided by the manufacturer. StarTech.com lists the capabilities of the Thunderbolt 3 cables on the individual product pages.
There are two different Thunderbolt 3 cable symbols: the 20Gbps symbol and the 40Gbps symbol. The 20Gbps symbol is composed of the Thunderbolt 3 symbol, and the 40Gbps symbol is composed of the Thunderbolt 3 symbol and the number three. These images are shown below.
To determine if your component is a Thunderbolt 3 device, look for the Thunderbolt 3 symbol (shown below). USB-C devices do not include this symbol. For more information about USB-C, see the following FAQ: http://www.startech.com/faq/usb-c-port-capabilites.
Thunderbolt symbol: https://sgcdn.startech.com/005329/media/products/gallery_large/TBLT3MMXM.B.jpg.
No, you cannot use this device to increase the maximum number of displays that a video card supports. For example, if your video card only supports up to three displays and you add this device to your setup, your display limit is still three displays.
If you have connected more than one of this device to the same computer and are experiencing display issues, you should make sure that your video card can support the number of displays that you are using in your setup.
MacBook Air, MacBook Pro 13-inch, and Mac Mini systems using the new Apple M1 chip support only a single external display over the Thunderbolt 3 ports, even when connected to a Thunderbolt 3 docking station or adapter with more than one video output. This limitation also applies to using multiple Thunderbolt or Type C display adapters on both Type C ports. This is not a limitation of StarTech.com products specifically, and Apple lists support for only one external display in the Tech Specs for Video Support on the M1 MacBook Pro 13” [external link to apple.com]. Turning off the laptop display or using clamshell mode does not change this.
One option for docking that allows more than one external display with an Apple M1-based Mac is to use a USB-C DisplayLink-based docking station or video adapter that requires a driver install. One dual monitor example is our DK30CHDDPPD, but please contact StarTech.com support for a recommendation based on your specific setup.
Please note: this single monitor limitation does not affect Intel-based Macs with Thunderbolt 3.
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