StarTech.com TB3CDK2DH · Thunderbolt docking station

MPN / P/N

TB3CDK2DH

Manufacturer designation

USB C Docking Station for MacBook Pro/Air-M1/M2/M3/M4, Thunderbolt Compatible, HDMI/DisplayPort, Dual 4K 60Hz/Single 8K, USB Type-C Laptop Dock, 96W Power Delivery, USB 10Gbps

Special Notes

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.

Power Source

AC Adapter Included

Power Delivery

96W

Input Voltage

110V-240V AC

Input Current

2.5A

Output Voltage

20V DC

Output Current

8.5 A

Plug Type

N

Colour

Black & Space Gray

Cable length

3.1 in [80 mm]

Product length

3.1 in [80.0 mm]

Width

8.7 in [22.0 cm]

Height

1.2 in [30.0 mm]

Weight

8.8 oz [250.0 g]

Operating Temperature

0C to 35C

Storage Temperature

-20C to 70C

Humidity

0% to 95% (non-condensing) at 25C

Supported Charging

BC 1.2 (1.5A); Outputs

Type and Rate

Thunderbolt 3 (40Gbps); USB 10Gbps; USB 5Gbps; USB 3.0 (5Gbps)

PXE

Yes

Wake-On-LAN (WOL)

Yes

Maximum digital resolutions

Thunderbolt 3 Laptops Dual Monitors: 4096 x 2160 @60Hz; Thunderbolt 3 Laptops Single Monitors: 7,680 x 4,320 @30Hz; USB 3.1 Type C Laptops Dual Monitors: 4K (3840x2160); @60Hz; USB 3.1 Type C Laptops Single Monitor: 5K (5120x2880); @60Hz (DP Only)

Fast-Charge Port(s)

Yes

4K Support

Yes

Displays Supported

2

Number of Battery Charge

2; 1.2 Ports

Audio

Yes

Interface

Thunderbolt 3; USB 10Gbps

Compatible Lock Slot

Kensington K-Slot

Number of Displays

2

Chipset ID

C-Media - CM6533; Genesys Logic - GL3590; Genesys Logic - GL3523; Realtek - RTD2186; Titan Ridge - JHL7440; Cypress - CCG5C; Realtek - RTL8153

Host Connector 1 (Quantity)

1

Host Connector 1

USB-C (Thunderbolt 40Gbps)

Connector 1 (Quantity)

1

Connector 1

USB-C (10Gbps, 4.5W)

Connector 2 (Quantity)

1

Connector 2

USB-A (10Gbps, 4.5W)

Connector 3 (Quantity)

1

Connector 3

3.5mm (3 Conductors, TRS)

Connector 4 (Quantity)

2

Connector 4

USB-A (5Gbps, 4.5W)

Connector 5 (Quantity)

1

Connector 5

USB-C (10Gbps, 4.5W)

Connector 6 (Quantity)

2

Connector 6

DisplayPort

Connector 7 (Quantity)

2

Connector 7

HDMI

Connector 8 (Quantity)

1

Connector 8

RJ-45

Selection limits

Match the exact connector standards, host features, supported OS/driver requirements and power-supply version. Manufacturer maximum throughput, resolution/refresh and Power Delivery ratings are conditional limits, not a universal result. USB-C connector shape alone does not guarantee DisplayPort Alt Mode, USB4/Thunderbolt bandwidth or USB Power Delivery. DisplayLink models may need drivers; macOS MST behaviour can differ. Check the exact product notes and display configuration.

Specification source: StarTech.com ↗
Checked against documentation: 16.10.2026