Quick Summary
The StarTech.com 3-Port USB-C to Triple HDMI MST Adapter is a multi-monitor adapter for Windows laptops. It uses a USB Type-C DP Alt-Mode connection and supports up to three 1080p 60Hz displays, with two 4K 30Hz monitors also mentioned in the product details.
It has an extra-long built-in 1ft, 30 cm cable, which gives more reach between the laptop and the adapter and may reduce strain on the USB-C port and connector on some setups.
Who It Is Best For
This adapter is for Windows users who want to add multiple HDMI displays from a USB-C laptop. It is especially relevant if you are setting up extended or mirrored screens and want a built-in cable rather than a direct plug-in adapter.
It is also aimed at buyers who need to check GPU display limits and host support before ordering, as the laptop must support DP Alt Mode 1.2, HBR2 and MST.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | StarTech.com. |
| Model | MSTCDP123HD. |
| Connection type | USB Type-C to 3x HDMI MST hub for a Windows laptop setup. |
| Display support | Up to three 1080p 60Hz displays are stated, with two 4K 30Hz monitors also mentioned. |
| Compatibility | Windows only. The host system must support DP Alt Mode 1.2, HBR2 and MST. |
| Cable | Built-in 1ft (30 cm) cable for extra reach and to help reduce connector strain in some setups. |
| Software | No drivers or software are required. |
| Additional utility | Windows Layout Utility is included for restoring app window locations when reconnecting. |
Why Buyers Choose It
- Three HDMI outputs let a Windows laptop connect to multiple displays from one USB-C port.
- No drivers or software are required, which keeps setup straightforward on supported systems.
- The built-in 1ft cable gives extra reach between the laptop and the adapter.
- The Windows Layout Utility is included for users who reconnect displays regularly.
What To Know Before You Buy
Check that your laptop supports USB-C DP Alt Mode 1.2, HBR2 and MST before ordering. This adapter is Windows only, so it is not suitable for macOS use.
Also confirm how many displays your GPU supports, since the product details note that some GPU chips support a maximum of three displays.
Review your monitor setup carefully if you want to use the stated 1080p 60Hz or 4K 30Hz display options, and make sure the selected arrangement suits your equipment.
Common Buyer Questions
Does it need drivers?
No, the adapter is stated to work without drivers or software.
Is it suitable for macOS?
No, it is stated as Windows only.
What connection does it use?
It uses USB Type-C to three HDMI outputs through an MST hub design.
What should I check before ordering?
Confirm host support for DP Alt Mode 1.2, HBR2 and MST, and check your GPU display limit.
Final Buying View
If you need a Windows USB-C adapter for multiple HDMI monitors, this StarTech.com model is built around that use. The most important checks are Windows compatibility, host support for DP Alt Mode 1.2, HBR2 and MST, and your GPU display limit.
Review the intended display setup before ordering so the selected option matches your laptop and monitors.
