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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
StarTech MST14CD123HD Triple HDMI Multi-Monitor Adapter
Overview
The StarTech MST14CD123HD is a bus-powered USB-C Multi-Stream Transport (MST) hub designed to connect up to three independent HDMI displays to a single USB-C port on your host device. This adapter is ideal for workstations requiring expanded desktop real estate for productivity applications, data analysis, or complex monitoring dashboards, leveraging DisplayPort 1.4 Alternate Mode. The MST14CD123HD supports 4K resolution at 60Hz on all three outputs, ensuring crisp visuals without compromising refresh rate. Its compact form factor and bus-powered operation simplify deployment in any workspace.
Compatibility
This MST hub requires a host device with a USB-C port that supports DisplayPort 1.4 Alternate Mode. It is compatible with Windows 10/11 and later versions, and macOS 11 (Big Sur) or later. Specific laptop models from Dell, HP, Lenovo, and Apple are generally compatible, provided their USB-C ports meet the DP Alt Mode 1.4 specification. It is not compatible with devices that only support USB-C data transfer or power delivery without DP Alt Mode. For video conferencing systems or security VMS workstations, ensure the host PC's USB-C port supports DP 1.4 Alt Mode and the operating system is compatible.
Installation Notes
The adapter is bus-powered, drawing power directly from the host USB-C port, eliminating the need for an external power adapter. The integrated cable measures 11.8 inches (30 cm), providing some flexibility in placement. Operating temperature range is 0°C to 40°C (32°F to 104°F). Storage temperature range is -40°C to 70°C (-40°F to 158°F). Maximum operating humidity is 85% RH (non-condensing).
What's in the Box
- 1x MST Hub
- 1x Quick Start Guide
Startech 3-Port USB-C Mst Hub - USB Type-C To 3X - MST14CD123HD
Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
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System Design, Deployment & Technical Support
Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
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- Get help validating product compatibility
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- Access fixed-scope support for rollout planning
- User setup guidance
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Guides, Tools & Calculators
- PoE requirements
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