The XTENDEX® 4K DisplayPort USB KVM HDBaseT Extender transmits uncompressed digital Ultra-HD 4Kx2K 30Hz 4:4:4 DisplayPort signal, transparent USB, and RS232 up to 328 feet over a single CATx cable using HDBaseT technology. Each extender consists of a local unit that connects to a computer, and a remote unit that connects to a UHD DisplayPort display and four USB 2.0 devices.