Skip to Content Skip to footer
Welcome to the Kensington site. We've directed you here based on your current location.


  • No Suggestions

Site Pages

Chevron Icon
Price  $269.99
SKU: K38390NA

Buying in Bulk?

Request Business Pricing

Looking to place an order of 25 units or more for your organization? Simply fill out the form below, and someone on our team will be in contact shortly.

Items marked with * are required.

Do you wish to receive related marketing communications from Kensington?


Chevron Icon

Thunderbolt 3 Technology

Allows users to transfer up to 40Gbps of data, video and audio using the included 0.7m Thunderbolt 3 cable for a quick and powerful plug and play experience.

Cross-Platform Compatibility

Supports Windows and Mac operating systems that support Thunderbolt 3 functionality to easily accommodate cross-platform environments.

Single 5K or Dual 4K Video Output

Provides support for a single 5K (5120x2880@60Hz) display or up to two 4K (4096x2160@60Hz) displays via DisplayPort for spectacular true-to-life images.

85W Power Delivery

Quickly charges your laptop and peripheral USB accessories using the Thunderbolt 3 connection to simplify connects and disconnects.

4 USB Ports

Extend productivity capabilities via three USB-A 3.2 Gen1 ports (up to 5Gbps; charging up to 5V/2.4A (1) and 5V/1.5A (2)), and one USB-C 3.2 Gen1 port (up to 5Gbps) with power delivery for an external device (5V/3A).

Premium Compact Design with Zero Footprint Mounting

Offers high quality structural components, well-organized connection options and the ability to attach the dock to the back of any 75mm or 100mm VESA compatible external display for a tidier workspace (mounting plate sold separately – K33959WW).

On/Off Switch

Conveniently turn the dock on or off as needed with the push of a button.

TAA Compliant

Supports federal government purchasing protocols.

Gigabit Ethernet Port

Provides a reliable 1Gbps wired networking connection.

Combo 3.5mm Headphone & Microphone Jack

Provides a convenient headset connection.

Kensington Standard and Nano Security Slots

Allows you to easily implement a cable lock from the #1 brand in physical device security to protect your technology investment from potential thieves. Accommodates both MicroSaver and NanoSaver locks.

Ideal for video editing, hot-desking, hoteling, home office and educational environments, Kensington’s SD2400T Thunderbolt 3 Dual 4K Nano Dock with Power Delivery provides users with a quick and powerful connection to a desktop setup. Providing support for Mac and Windows, up to 40Gbps data transfer, 85W power delivery, support for two 4K monitors, and four USB ports, the SD2400T is the essential Thunderbolt 3 docking station.

  • Best For: Thunderbolt 3 or Thunderbolt 4 Laptops & Ultrabooks and Monitors that support up to 4K
  • Connection Technology: Thunderbolt 3 (Thunderbolt 4 laptops supported at Thunderbolt 3 features)
  • Power Delivery: Supports USB-C PD 3.0 (85W of laptop charging)
  • Compatibility: Windows 10 or above, macOS 10.14 or above
  • # of Monitors Supported: 2
  • Video Ports: 2x DisplayPort
  • Maximum Resolution Supported: Single Monitor: 5K (5120x2880@60Hz) or Dual Monitors: 4K (4096x2160@60Hz)
  • Plug & Play: Plug & Play installation without the need for drivers or downloads
  • System Requirements: Only compatible with laptops equipped with Thunderbolt 3 or Thunderbolt 4 ports; not backwards compatible with Thunderbolt 1 or Thunderbolt 2. For Windows based devices, ensure your laptop supports Power Delivery. For Mac, please ensure you are using a MacBook Air or MacBook Pro that supports Thunderbolt 3 or greater.
  • Warranty: Three-year limited warranty
  • Original Apple M1 - While this docking station will work with the original M1 MacBook, only a single video output is supported. For multi-monitor support on your original M1 MacBook, see our Hybrid USB-C DisplayLink docking stations (ex: SD4700P, SD4750P, SD4780P, SD4900P, etc.) or USB-A DisplayLink adapters (DisplayPort K33989, HDMI K33988, DVI-I K33974). NOTE: Newer Apple devices (M1/M2/M3 Max and M1/M2/M3 Pro, etc.) are not impacted and support multiple monitors without issue on Thunderbolt docking stations.
  • Optimized for your Windows 11 docking station needs, including support for Snap Layouts and Snap Groups.

Product Specifications

Chevron Icon
Connection Technology:
Thunderbolt 3
Additional Screen Outputs:
Video Ports:
Maximum Resolution:
Power Delivery :
Operating System(s):
macOS, Windows
Number of USB Ports:
USB Fast Charging:
TAA Compliant:
Docking Station Family:
The Task Master
Yes (for Windows only)
Best For:
Thunderbolt 3 Laptops & Ultrabooks and Monitors that support up to 4K
macOS 10.14 or above, Windows 10 or above
USB-A Ports:
3x: (1) USB-A 3.2 Gen1 (front) with 5V/1.5A fast-charging & (2) USB-A 3.2 Gen1 (back) supporting 5V/0.9A
USB-C Ports:
1 x: USB-C 3.2 Gen1 (front) with 5V/3A charging
1 x 3.5mm Combo Microphone & Headphone Port (front)
Data Transfer Speeds:
Supports up to 40Gbps data transfer speed
Ethernet Speed (Mbps):
10, 100, 1000 Actual Ethernet speeds may vary depending on, but not limited to, Internet bandwidth, Ethernet cables, network switches, and the hardware and firmware performance of the host computer.
Maximum Resolution Supported:
Single Monitor: 5K (5120 x 2880 @ 60Hz), Dual Monitors: 4K (4096 x 2160 @ 60 Hz)
Mounting Option:
VESA Mount Compatible: Mounting plate (K33959WW) for 75mm or 100mm VESA layouts sold separately
Limited 3-year warranty
Plug & Play:
Plug & Play installation without need for drivers or downloads
Security Slot Compatibility:
Kensington Nano Security Slot, Kensington Security Slot
System Requirements:
Only compatible with laptops equipped with Thunderbolt 3 or Thunderbolt 4 ports; not backwards compatible with Thunderbolt 1 or Thunderbolt 2.
USB-C Power Delivery:
Supports USB-C PD 3.0 (85W of laptop charging)
Video Output:
2 x DisplayPort v1.2
4K Support: