Dual-4K HDMI USB-C Multiport Adapter with 100W PD
Turn a compatible USB-C or Thunderbolt laptop into a dual-display workstation with two HDMI outputs, a 5 Gbps USB hub, SD and microSD readers, Gigabit Ethernet and 100W PD pass-through.
Key features
Dual-HDMI MST workspace
Supports up to two 4K 60Hz HDMI displays when the host provides DP 1.4 Alt Mode, DSC and MST capability.
USB and memory-card access
Adds two USB-A 5 Gbps ports, including a BC 1.2 port, plus SD and microSD card readers.
Gigabit Ethernet
Provides reliable 10/100/1000 Mbps wired networking with full duplex and Wake-on-LAN support.
100W PD 3.0 pass-through
Accepts up to 100W USB-C input, reserving 15W for the dock and supplying up to 85W to the host.
What to know
Portable dual-screen productivity
The aluminium travel dock combines two HDMI outputs, USB peripherals, memory cards, wired networking and optional laptop charging through one 30 cm USB-C host cable.
Host capability determines video output
Single- and dual-monitor resolutions vary by host GPU and DisplayPort support. Maximum dual 4K 60Hz requires DP 1.4 with DSC and MST.
Product videos
StarTech.com Connectivity Tools
Australian version with official StarTech.com warranty
3-Year manufacturer warranty
This is the Australian version supplied by DeviceDeal and is covered by a three-year official StarTech.com manufacturer warranty in Australia. Keep your DeviceDeal invoice as proof of purchase. Warranty coverage and claims are subject to StarTech.com warranty terms and product assessment.
StarTech 120B-USBC-MULTIPORT FAQ
Can the 120B-USBC-MULTIPORT run two 4K monitors?
Yes, up to dual 4K 60Hz is supported when the host provides DP 1.4 Alt Mode, DSC and MST. Other hosts may provide lower dual-display resolutions.
What ports does this USB-C adapter add?
It adds two HDMI outputs, two USB-A 5 Gbps ports, Gigabit Ethernet, SD and microSD readers, and a USB-C 100W PD input.
How much power can it deliver to a laptop?
It accepts up to 100W USB-C PD input, reserves 15W for the adapter and can provide up to 85W to the host laptop.
Is a USB-C power adapter included?
No. The dock can run from bus power, while a compatible USB-C power adapter may be connected for pass-through charging.
Does it support wired Gigabit Ethernet?
Yes. It supports 10/100/1000 Mbps Ethernet, full duplex and Wake-on-LAN.
Which memory cards can it read?
The supplied information lists SD, SDHC, SDXC and microSD memory-card support.
What host features are required?
The host USB-C port must support DisplayPort Alt Mode for video and USB Power Delivery for charging; dual-monitor operation requires MST.
What warranty covers the 120B-USBC-MULTIPORT?
This Australian-version product is covered by a three-year official StarTech.com manufacturer warranty in Australia. Keep the DeviceDeal invoice as proof of purchase; claims remain subject to StarTech.com terms and assessment.
