StarTech Dual Monitor USB-C Multiport Adapter - DK30C2HAGPD
This is what matters about StarTech Dual Monitor USB-C Multiport Adapter - DK30C2HAGPD.
About
A StarTech dock with a physical DP Alt Mode switch that trades video bandwidth for data speed — one position gives dual 1080p/single 4K@30Hz with 5Gbps USB and Gigabit Ethernet, the other gives single 4K@60Hz but drops USB and Ethernet to USB 2.0-class speeds. Discontinued, replaced by 120B-USBC-MULTIPORT.
- Power Delivery in
- 100W
- PD passthrough to host
- 85W
- Max resolution
- 3840x2160@60Hz
- Requires DisplayLink driver
- No
Ports: 2× HDMI, 1× USB-A 3.1 Gen1 (5Gbps), 1× USB-A 2.0, 1× Ethernet (Gigabit) and 1× USB-C (PD 100W in)
Confirmed with
- Notebook (generic)
Mechanical DP Alt Mode switch: left position gives 2-lane video (dual 1080p or single 4K@30Hz) with USB 3.0 (5Gbps); right position gives 4-lane video (dual 4K@30Hz or single 4K@60Hz) but drops USB to 2.0 (480Mbps), which also degrades the Ethernet PHY to 100Mbps.