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Gray rectangular USB-C docking station with built-in cable, two HDMI, two USB-A, USB-C, SD, microSD and Ethernet ports

Tripp Lite

Tripp Lite U442-DOCK8G-GG docking station

SKU CH-DJSW-91XWJ MPN U442-DOCK8G-GG

A USB-C docking station with Thunderbolt 3 that adds dual 4K HDMI displays, two USB-A ports, USB-C, SD and microSD slots, and Gigabit Ethernet while delivering 100 W power delivery

  • ColorGray
  • Thunderbolt 3Yes
  • Ports SpecPorts: 8 Side A - Connector 1: USB C (MALE) Side B - Connect
  • Dimension4.33" x 0.45" x 2.32"
  • Weight0.20 lb.
  • FeaturesUSB-C Docking Station Turns Your Laptop into a Workstation.
  • Turns a USB-C laptop into a full workstation with eight integrated ports
  • Drives two external displays at 4K 60 Hz through dual HDMI outputs
  • Charges the host device at up to 100 W via Power Delivery
  • Adds wired Gigabit Ethernet when wireless is unreliable
  • Reads SD and microSD cards without an extra adapter

Thunderbolt 3 Dock for Dual 4K Displays

This Thunderbolt 3 docking station adds eight ports through a single USB-C connection. It drives two HDMI monitors at 4K 60 Hz while providing Gigabit Ethernet, USB-A peripherals and SD card access. The compact grey unit suits professionals who need a permanent desk setup for a compatible laptop.

DisplayPort Alt Mode Limits Video Output

Video requires the host USB-C port to support DisplayPort Alternate Mode; without it the HDMI outputs stay dark. The two HDMI ports share the available bandwidth, so driving both at 4K 60 Hz depends on the host graphics capability. Power Delivery passes up to 100 W, but the host must negotiate that level over USB-C PD.

Plug-and-Play With Reversible Cable

The built-in USB-C cable plugs in either orientation and needs no driver installation on modern operating systems. Common issues arise when the host port lacks Alt Mode or negotiates less than 100 W, leaving displays blank or the laptop charging slowly. The dock draws its own power from the host, so very thin ultraportables may throttle under sustained load.

Highlights

  • Turns a USB-C laptop into a full workstation with eight integrated ports
  • Drives two external displays at 4K 60 Hz through dual HDMI outputs
  • Charges the host device at up to 100 W via Power Delivery
  • Adds wired Gigabit Ethernet when wireless is unreliable
  • Reads SD and microSD cards without an extra adapter

Specifications

BrandTripp Lite
ModelU442-DOCK8G-GG
ColorGray
Thunderbolt 3Yes
Ports SpecPorts: 8
Side A - Connector 1: USB C (MALE)
Side B - Connector 1: (2) HDMI (FEMALE)
Side B - Connector 2: (2) USB A (FEMALE)
Side B - Connector 3: USB C (FEMALE)
Side B - Connector 4: MICRO SD (FEMALE); SD (FEMALE)
Side B - Connector 5: RJ45 (FEMALE)
Connector Plating: Nickel
Dimension4.33" x 0.45" x 2.32"
Weight0.20 lb.
FeaturesUSB-C Docking Station Turns Your Laptop into a Workstation.
Supports USB-C DisplayPort Alternate Mode for Converting Audio/Video Signals.
Transmits 4K Video to 2 HDMI Displays Simultaneously.
USB Ports Connect Keyboards, Thumb Drives and Other Peripherals.
PD Charging Port Charges the Connected Notebook, Tablet or Other Device.
Accesses a Wired Gigabit Ethernet Network.
Allows External Memory Access.
Built-In USB-C Cable Attaches in Either Direction.
Ready to Use Right from the Package, So You Can Plug and Play Immediately.
Shipping weight0.10 kg
Package size140 × 100 × 23 mm

Questions about this item

Should I choose the single USB-C cable version or a model with detachable cables?

This unit has a built-in USB-C male connector on Side A and provides eight ports including two HDMI, two USB-A, one USB-C, SD and microSD slots plus Gigabit Ethernet.

What does the 4K 60 Hz 4:4:4 figure mean when I connect two monitors?

Both HDMI ports can output UHD resolution at 60 Hz with full 4:4:4 colour simultaneously, turning the laptop into a dual-display workstation.

How does the Thunderbolt 3 designation affect what I can plug into the USB-C port?

The dock uses Thunderbolt 3 and USB-C DisplayPort Alternate Mode to carry video, data and up to 100 W of Power Delivery charging through the single USB-C link.

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