Product images are provided for reference and may not represent the exact model, configuration, or included components.

No Bots, Just Experts

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.

Description

StarTech MST14CD123DP USB-C to Triple DisplayPort Multi-Monitor Adapter

Overview

The StarTech MST14CD123DP adapter allows you to connect up to three independent DisplayPort monitors to a single USB-C port on your host system, provided it supports DisplayPort Alternate Mode. This is crucial for security integrators and IT professionals needing to expand their monitoring capabilities for VMS (Video Management System) workstations, NVR interfaces, or complex diagnostic environments. The MST (Multi-Stream Transport) technology, powered by the Synaptics VMM5330 chipset, enables simultaneous high-resolution output without requiring a dedicated graphics card for each display. Its compact form factor and bus-powered operation simplify deployment in space-constrained control rooms or mobile surveillance units. The MST14CD123DP model specifically supports 3x 4K 60Hz displays, ensuring smooth, high-fidelity video feeds for critical monitoring tasks.

Compatibility

This adapter requires a USB-C port on the host computer that supports DisplayPort 1.4 Alternate Mode. It is compatible with Windows operating systems. For optimal performance, ensure your host system's USB-C port and graphics drivers are up-to-date. It connects to DisplayPort monitors using standard DisplayPort cables (sold separately).

Installation Notes

The adapter is bus-powered, drawing power directly from the host's USB-C port, eliminating the need for an external power adapter. The operating temperature range is 0°C to 40°C (32°F to 104°F), suitable for standard office or control room environments. Storage temperature ranges from -40°C to 70°C (-40°F to 158°F).

What's in the Box

  • 1x MST14CD123DP USB-C to Triple DisplayPort Multi-Monitor Adapter
  • 1x Quick Start Guide
Specifications
Video Revision: DisplayPort 1.4
Audio Specifications: DisplayPort - 2 Channel Audio
Connector A: USB-C (24 pin) DisplayPort Alt Mode
Connector B: 3 - DisplayPort
OS Compatibility: Windows
Power Source: Bus Powered
Operating Temperature: 0C to 40C
Storage Temperature: -40C to 70C
Humidity: 0% to 85% RH
Color: Gray
Cable Length: 11.8 in [30 cm]
Product Length: 1.7 in [4.3 cm]
Product Width: 4.1 in [10.5 cm]
Product Height: 0.6 in [1.4 cm]
Weight of Product: 1.9 oz [54.0 g]
Warranty: 3 Years
Number of Displays Supported: 3
AV Output: DisplayPort - 1.4
Chipset ID: Synaptics VMM5330
Brand: StarTech
MPN: MST14CD123DP
Type: Power Supply
Connectivity: USB
Q&A
Reviews
Have Questions?

StarTech Usb-c TO Triple-displayport - MST14CD123DP

$59.99
$48.99

RELATED PRODUCTS

System Design, Deployment & Technical Support

Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.

Fixed scope • Fixed price

System Design Assistance

  • Get help validating product compatibility
  • Coverage requirements
  • Storage planning and deployment architecture before you buy.
Request Design Help

Deployment & Configuration Support

  • Access fixed-scope support for rollout planning
  • User setup guidance
  • Migration and system standardization across single-site or multi-site deployments
View Support Services

Guides, Tools & Calculators

  • PoE requirements
  • Storage retention
  • Camera selection and deployment methodology
Open Technical Resources