DKM FX Transmitter Modular Interface Card, Redundant Transmission, DVI-D and USB HID over CATx - Part of the DKM FX KVM Modular Extender System of transmitter and receiver interface cards and housings. - Works over CAT5e or CAT6 cabling. - Transmitter mainboard unit that can be installed in the DKM FX HD Video and Peripheral Matrix Switch Modular Housing Chassis. - Supports DVI-D video signals with USB HID devices.