Quick Summary
The StarTech.com MSTCDP123DP is a USB-C to triple DisplayPort adapter for Windows laptops. It supports up to three extended or mirrored displays and uses a built-in 1ft (30 cm) cable for extra reach.
It works with a USB-C DP Alt-Mode port on Windows systems and is described as compatible with TB3, TB4 and USB4. The adapter is not compatible with macOS.
Who It Is Best For
This adapter is for buyers who want to add multiple DisplayPort monitors from a compatible Windows laptop. It is also relevant if you need the extra cable length to reduce strain on the port or connector, especially on 2-in-1 devices or laptops used on riser stands.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | StarTech.com. |
| Model | MSTCDP123DP. |
| Connection type | USB Type-C to 3x DisplayPort 1.2 MST hub for a compatible USB-C DP Alt-Mode port. |
| Display support | Up to three 1080p 60Hz or two 4K 30Hz displays are stated in the description. |
| Operating system | Windows is supported; macOS is not compatible. |
| Cable length | 1ft (30 cm) built-in cable for extra reach and reduced port strain. |
| Extra connectivity note | Includes Windows Layout Utility for restoring app locations when reconnecting. |
Why Buyers Choose It
- Triple DisplayPort output gives you a single adapter for multiple monitors.
- The built-in 1ft cable adds reach, which is useful when the laptop sits on a riser stand or similar setup.
- The Windows Layout Utility is included for restoring app positions after reconnecting.
What To Know Before You Buy
Check that your laptop supports DP Alt Mode 1.2, HBR2 and MST before ordering. The adapter is for Windows systems and is not compatible with macOS.
Confirm how many displays your GPU supports, because the description notes that some chips are only capable of supporting up to three displays. Also check your preferred monitor resolution and refresh rate against the stated display support.
Common Buyer Questions
How many monitors can it drive?
It is stated to support up to three displays, or two 4K 30Hz displays.
Does it work with macOS?
No, it is stated as not compatible with macOS.
What connection does it need?
It needs a USB-C DP Alt-Mode port that supports DP Alt Mode 1.2, HBR2 and MST.
How long is the cable?
The built-in cable is 1ft, or 30 cm.
Final Buying View
Choose this adapter if you need a Windows-compatible USB-C to triple DisplayPort setup and your device supports the required display modes. Confirm OS support, GPU display limits and the selected monitor setup before ordering.
