The 4K USB KVM Extender Over Cat5/6a by LornCeng allows you to extend your KVM switch up to 394 feet with DVI and HDMI 2.0 connectors. It features a black color and a 21-foot cable length, with powered functionality and a 1-year manufacturer warranty. Compatible with the T03-21 model, this extender provides a reliable solution for expanding your computer setup. The 12V output voltage ensures consistent power supply for your peripherals.