DKM FX Transmitter Modular Interface Card, Redundant Transmission, DVI-D and USB HID over Fiber- Part of the DKM FX KVM Modular Extender System of transmitter and receiver interface cards and housings.- Works over single-mode or multimode fiber.- Transmitter mainboard unit that can be installed in the DKM FX Modular Housing Chassis.- Supports DVI-D video signals with USB HID devices.