The PS22USB PS/2 to USB (Universal Serial Bus) keyboard & mouse adapter converts a USB (Universal Serial Bus) keyboard & mouse to PS/2 connections allowing you to connect a newer USB (Universal Serial Bus)-based keyboard & mouse to legacy systems that only have PS/2 connection ports available. Newer USB (Universal Serial Bus) keyboards & mice cannot simply use simple adapters to connect to PS/2 ports, as the signal is of a different nature, so active conversion is required for full functionality. Supporting plug & play installation with no software or driver requirements, the PS/2-USB adapter offers a cost-effective way to bridge USB (Universal Serial Bus) peripherals with a PS/2 based computer. For systems that have both PS/2 & USB (Universal Serial Bus) connections, this compact device can also be used to free up 2 USB (Universal Serial Bus) ports.