StarTech.com USB-C Dual Monitor Multiport Adapter / Mini Dock (MST, 4K, 100W PD)
High-performance USB-C multiport adapter/docking station that adds multi-monitor video,
Gigabit Ethernet, and 10Gbps USB connectivity via a single USB-C / Thunderbolt 3/4 port.
Includes a built-in 25cm (10") USB-C host cable.
Important compatibility notes (please read):
- USB-C DP Alt Mode required for video output.
- MST required on the host device for dual extended displays (many Windows laptops support MST; macOS typically does not for MST dual-extend).
- USB-C Power Delivery support required for laptop charging via pass-through.
Key Features
- Dual monitor capable via MST with multiple output options
- Video outputs: HDMI 2.0b + VGA + USB-C (DP Alt Mode video)
- HDMI: up to 4K 60Hz (HDR supported, system dependent)
- VGA: up to 1080p 60Hz (analog)
- Downstream USB-C port: video (DP Alt Mode) or 10Gbps data + up to 10W power
- USB hub: 2 × USB-A 3.2 Gen 2 (10Gbps)
- Networking: 1 × RJ45 Gigabit Ethernet (10/100/1000)
- Charging: USB-C PD 3.0 pass-through up to 100W (up to ~80W to laptop; ~20W reserved for adapter)
- Bus-powered (can run without a charger for basic use)
Typical Use Cases
- Connect external displays at home/office/hot-desk (HDMI/VGA/USB-C display)
- Add wired Ethernet where laptops don’t include an RJ45 port
- Use the downstream USB-C port for a portable monitor or a USB-C peripheral
- Carry a compact “one adapter” solution for travel and presentations
Video Performance (System Dependent)
- Supports high-resolution output up to 3840 × 2160 with refresh rates up to 60Hz (port/host dependent).
- Dual-monitor resolutions depend on the host GPU/USB-C DP version and whether MST is supported.
Specifications
| Host Interface |
USB-C (USB 3.2 Gen 2 / 10Gbps) |
| Video Outputs |
HDMI 2.0b (1), VGA (1), USB-C DP Alt Mode (1) |
| USB Ports |
2 × USB-A 3.2 Gen 2 (10Gbps), 1 × downstream USB-C (video or 10Gbps data + up to 10W) |
| Ethernet |
1 × RJ45, 10/100/1000 Mbps, full duplex |
| Data Transfer Rate |
Up to 10 Gbit/s |
| Power Delivery |
USB-C PD 3.0 pass-through up to 100W (adapter reserves power for stable operation) |
| Cable Length |
0.25 m (25 cm / 10 in) integrated USB-C cable |
| Chipset |
Genesys Logic (GL3590 / GL9510) + Realtek (RTD2142 / RTL8153) |
| Colour |
Grey |
| Indicators |
Activity / Link LEDs |
| UASP Support |
Yes |
| Power Consumption |
Typical 12 W |
What You’ll Receive
- StarTech.com USB-C Dual Monitor Multiport Adapter / Mini Dock (as shown in photos)
