Modular KVM extender TX expansion card adds support for USB 2.0 for CATx connectivity. Use with the DKM or DKM FX chassis for modular switching or as a point-to-point KVM extender. CATx distances up to 400 meters (1312 feet). USB 2.0 at 480 Mbps Occupies (1) slot of housing space. Compatible with the DKM FX Compact Extender.