4K Ultra HD & 3D over Fiber: Transmit crystal‑clear 3840×2160@30 Hz video—including 3D—over a single‑mode fiber link up to 20 km. Leverage HDMI 1.4 compliance and EDID passthrough for flawless source‑display compatibility Local HDMI Loop‑Out with EDID Pass‑Thru: Monitor video locally via the onboard HDMI loop‑out port, while EDID passthrough ensures correct handshakes and resolution negotiation—perfect for presentations, control rooms, and digital signage Bi‑Directional Audio, IR & RS‑232 Control: Enjoy stereo audio return channel and two‑way IR/RS‑232 signalling for remote device control. Seamlessly manage AV sources, projectors, cameras, and RS‑232‑enabled equipment from either end Integrated 4×USB 2.0 KVM Switching: Control connected PCs, KVM switches, or USB peripherals with four USB 2.0 ports. Switch keyboard, mouse, and other USB HID devices over fiber for centralized workstation setups Plug‑&‑Play & Industrial‑Grade Reliability: No drivers or software required—just power on and connect. Rugged metal housing, wide‑range DC input, and fiber‑optical isolation deliver stable, low‑latency performance in professional AV, broadcast, and security installations HDMI KVM Extender Over SM Fiber