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Black Box ACX1MR-HDMI-SM Modular KVM Extender Receiver
Overview
The Black Box ACX1MR-HDMI-SM is a modular KVM extender receiver designed for deployments that require separating an HDMI video source from the display or operator console over extended distances. As the receiver unit in the ACX1M modular KVM extender system, the ACX1MR-HDMI-SM handles the remote-end signal — accepting the fiber or copper extension link and outputting HDMI video to the local monitor at the operator station. This modular architecture is a practical fit for control rooms, broadcast environments, secure workstation clusters, and AV-over-infrastructure installations where the compute hardware must be kept in a locked equipment room while operators work at a separate desk or console.
The HDMI interface on the ACX1MR-HDMI-SM means it integrates directly with standard HDMI monitors without adapters or conversion hardware at the desk. Black Box's modular KVM extender platform is built around interchangeable transmitter and receiver modules, so the ACX1MR-HDMI-SM pairs with a compatible ACX1M transmitter module to complete the extension link. Consult the full Black Box catalog to confirm the correct transmitter pairing and any required chassis or power components for your specific installation.
Key Features
- HDMI Output at the Remote End: Delivers HDMI signal directly to the operator-side monitor — no dongle or format converter needed at the desk, which reduces failure points in the signal chain.
- Modular Platform Architecture: As part of the KVM extender modular family, the receiver module slots into the ACX1M system chassis, allowing mixed-signal configurations (HDMI, DisplayPort, USB, audio) within a single infrastructure rather than deploying separate point-to-point extenders per signal type.
- Single-Mode Fiber Transport (SM designation): The SM suffix indicates single-mode fiber connectivity, which supports substantially longer extension runs than multimode — typically relevant for inter-building links, campus-scale deployments, or any installation where the transmitter and receiver span more than a few hundred meters.
Integration & Compatibility
The ACX1MR-HDMI-SM operates within Black Box's ACX1M modular KVM extender ecosystem. Confirm chassis compatibility, required SFP or fiber interface modules, and maximum extension distance with the paired transmitter before purchasing. For control room and KVM switching integrations, verify that the HDMI signal resolution and refresh rate supported by the transmitter matches your source hardware. If your deployment involves USB HID (keyboard/mouse) or audio extension alongside video, additional receiver modules may be required depending on chassis slot availability.
Frequently Asked Questions
Q: What is the ACX1MR-HDMI-SM?
A: The ACX1MR-HDMI-SM is the receiver module for Black Box's ACX1M modular KVM extender system. It receives the extended signal over single-mode fiber and outputs HDMI video to a monitor at the remote operator station.
Q: Does the ACX1MR-HDMI-SM include a transmitter?
A: No. The ACX1MR-HDMI-SM is the receiver module only. A compatible ACX1M transmitter module and appropriate system chassis are required to complete the extension link.
Q: What fiber type does the ACX1MR-HDMI-SM use?
A: The SM designation indicates single-mode fiber, which supports longer extension distances than multimode fiber. Verify the exact fiber connector type and SFP requirements with Black Box product documentation before installation.
Q: What video interfaces does the ACX1MR-HDMI-SM support at the remote end?
A: The ACX1MR-HDMI-SM provides an HDMI output at the receiver (remote operator) end, connecting directly to any HDMI-capable monitor.
Q: Can the ACX1MR-HDMI-SM be used in a control room or broadcast environment?
A: Yes. Modular KVM extenders like the ACX1MR-HDMI-SM are a standard fit for control rooms, broadcast facilities, and secure workstation clusters where compute hardware must be physically separated from operator consoles.

The ACX1MR-HDMI-SM is the remote-end receiver module in Black Box's ACX1M modular KVM extender platform — the piece that sits at the operator desk and delivers HDMI video from a source that may be hundreds of meters away over single-mode fiber. If you're speccing a control room or secure compute cluster where the servers live in a locked equipment room, this is the module that closes the loop on the operator side.
Technical Highlights:
- HDMI Interface: Native HDMI output means you connect directly to any HDMI monitor at the remote station — no format conversion hardware in the signal path, which matters when you're troubleshooting a signal issue at 2 a.m.
- Single-Mode Fiber (SM): Single-mode fiber supports inter-building and campus-scale runs that multimode simply can't reach — the SM designation here is the reason to choose this module over the multimode variant when your transmitter and receiver are in different buildings.
- Modular Architecture: The ACX1M chassis approach lets you mix HDMI, DisplayPort, USB, and audio extension in a single frame rather than stacking separate point-to-point extenders — a real wiring and maintenance advantage in a multi-seat control room.
Deployment Considerations:
- The ACX1MR-HDMI-SM is the receiver module only — you need a matching ACX1M transmitter module plus the appropriate chassis and any required SFP transceivers to build a complete link. Confirm all components before ordering.
- Available source evidence is limited to the HDMI interface and single-mode fiber designation. Verify maximum extension distance, supported HDMI resolutions, and USB/audio module compatibility directly against Black Box's current ACX1M system documentation before finalizing your BOM.
Best fit for control room builds, broadcast facility operator stations, and secure workstation clusters on campus-scale fiber runs where HDMI at the desk and compute in the equipment room is a hard requirement.
Black Box Modular KVM Extender Receiver - - ACX1MR-HDMI-SM
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