StarTech ST124HDVW 2x2 HDMI Video Wall Controller and Processor

Overview

The StarTech ST124HDVW is a single-input, four-output HDMI video wall controller built to split and scale one 4K/60Hz source across a 2x2 array of displays. If you're deploying a command center video wall, a retail digital signage grid, or a multi-monitor broadcast monitoring setup, this unit handles the signal distribution and per-output scaling in a compact 1U-friendly chassis — no PC-based splitter software, no separate scaler hardware required.

At 8.3 x 6.2 x 1.8 inches and 2.3 lb, the ST124HDVW sits flat on a shelf or mounts in a rack without consuming significant real estate. The universal 100–240V AC input means it deploys globally without a transformer, accepting a 24V DC regulated supply at 1.25A drawn from the included adapter.

Key Features

• 4K/60Hz HDMI 2.0 Input and Outputs: All five HDMI ports (1 in, 4 out) run HDMI 2.0, supporting resolutions up to 4096x2160 at 60Hz. That matters because most budget splitters top out at 4K/30Hz or drop the signal to 1080p on scaled outputs — this one holds 4K through the full chain, so each panel in your 2x2 wall receives a properly scaled 4K-quality feed rather than an upscaled 1080p image.
• 7.1 Channel Audio Passthrough: The unit passes 7.1 discrete audio channels alongside the video signal. For boardroom or broadcast setups with surround-capable display systems, you're not forced to pull a separate audio run — the HDMI path carries the full multichannel mix to your display or AVR.
• RJ-45 Network Control Port: The rear RJ-45 connector provides IP-based control, letting AV control systems (AMX, Crestron, or custom TCP/IP scripting) send commands over the existing network infrastructure. No dedicated control cabling needed if your rack already has a network drop.
• DB-9 Serial Control Port: RS-232 via the DB-9 connector gives legacy AV control processors a direct serial command path. Facilities running older control systems or those that prefer deterministic serial control over IP can use this port without any additional interface hardware.
• USB-A Input Port: The USB-A input port enables firmware updates and configuration imports directly from a flash drive, keeping the unit current without routing a laptop into the rack or requiring network-accessible firmware servers.
• 0°C to 40°C Operating Range: Rated for standard indoor environments up to 40°C, which covers server rooms, AV equipment closets, and control rooms operating under normal HVAC conditions. Not suited for uncontrolled outdoor enclosures or high-heat industrial environments without supplemental cooling.
• Compact, Shelf-Mount Form Factor: At 1.8 inches tall, the ST124HDVW fits on a standard 1U rack shelf without occupying a full rack unit of panel space. The 2.3 lb weight means it stays put without dedicated rack ears — though dedicated rack mounting is advisable in mobile or high-vibration installs.

Integration and Compatibility

The ST124HDVW accepts a single HDMI 2.0 source — a media player, PC, NVR output, or broadcast decoder — and distributes it to four HDMI 2.0 displays. Control integrators can manage the unit via IP (RJ-45) or RS-232 (DB-9), covering the two most common AV control bus types in commercial installations. For larger video wall controller deployments or installations requiring more than four outputs, daisy-chaining or a higher-channel-count distribution system would be required — the ST124HDVW is purpose-built for the 2x2 configuration specifically.

Power comes from a 24V DC, 1.25A external supply connected from the unit's 100–240V AC universal adapter — keep the supply accessible for field replacement, as it is not an internal PSU. Storage temperature tolerance runs from -20°C to 60°C, so the unit can be warehoused or shipped in standard freight conditions without concern. Operating humidity is rated 20–90% RH (non-condensing), which covers most climate-controlled facility environments.

For AV-over-IP or HDBaseT distribution to distant displays, this controller's HDMI outputs would feed into extenders or wall-plate transmitters — pair it with compatible HDMI extenders to push signals beyond the native HDMI cable distance limits. If your installation involves a digital signage player as the content source, the ST124HDVW slots cleanly into that signal chain between player and display array.

For buyers evaluating StarTech's broader AV distribution lineup, the StarTech AV solutions catalog covers matrix switches and signal extenders that complement this controller for more complex routing requirements.

Frequently Asked Questions

Q: What is the maximum resolution the ST124HDVW supports?

A: The ST124HDVW supports up to 4096x2160 (4K DCI) at 60Hz on both its HDMI 2.0 input and all four HDMI 2.0 outputs.

Q: Can the ST124HDVW be controlled remotely over a network?

A: Yes. The unit includes a rear RJ-45 port for IP-based control, allowing integration with AV control systems or custom TCP/IP command scripting over your existing network infrastructure.

Q: Does the ST124HDVW support audio passthrough?

A: Yes. The ST124HDVW passes up to 7.1 channel audio alongside the video signal through the HDMI outputs, so a separate audio distribution path is not required for multichannel setups.

Q: What power supply does the ST124HDVW use?

A: The unit accepts 100–240V AC input and operates on a 24V DC, 1.25A regulated supply. The universal AC input range means it works on standard mains power in North America, Europe, and most international markets without a step-down transformer.

Q: What are the operating temperature limits for the ST124HDVW?

A: The ST124HDVW is rated for operation between 0°C and 40°C, suitable for climate-controlled indoor environments such as AV equipment closets, control rooms, and server rooms.

Q: What is the warranty on the ST124HDVW?

A: The ST124HDVW carries a 2-year manufacturer warranty.

Karl Wilson

The ST124HDVW is one of the cleaner solutions I've seen for fixed 2x2 video wall builds — the HDMI 2.0 spec across all five ports (one in, four out) at 4096x2160/60Hz means you're not trading resolution for scale factor, which is the first thing to verify on any video wall processor before it goes on a drawing.

Technical Highlights:

• Dual Control Paths (RJ-45 + DB-9): Having both IP and RS-232 control on the same unit means you're not locked to one control bus. Crestron and AMX rooms can use IP; legacy serial-controlled AV racks use the DB-9 without an additional gateway.
• 7.1 Audio on All HDMI Outputs: Passing 7.1 discrete channels through every output eliminates a separate audio matrix for setups where each display zone feeds into an AVR or DSP — that's one fewer device in the signal chain and one fewer failure point.
• Universal 100–240V AC Input: The 24V DC, 1.25A supply runs off universal mains. For integrators building out international installs or staging equipment in facilities with mixed power standards, this removes the transformer spec from the BOM entirely.

Deployment Considerations:

• Plan the HDMI cable runs before finalizing the rack position — HDMI 2.0 at 4K/60Hz is sensitive to cable quality and length. For runs beyond 15 feet, use active or fiber HDMI cables or add HDMI extenders between the controller outputs and the display inputs.
• Operating temperature ceiling is 40°C — adequate for a conditioned equipment room, but if this unit lives in a poorly ventilated AV closet that routinely climbs above that threshold, add active cooling. No margin is built in above the rated limit.

For a fixed-configuration command center or operations room with a permanent 2x2 display wall driven by a single 4K source — NVR output, media player, or broadcast decoder — the ST124HDVW handles the signal distribution cleanly without requiring a full matrix switcher at significantly higher cost.