USB to PS2 PS/2 Converter Adapter for Mouse Keyboard Blue Compliant with USB HID spec USB 1.0 / 1.1 / 2.0 versions compliant Fully compliant with PS/2 keyboard and mouse No software needed . USB Bus powered Support Windows 98 / SE / ME / 2000 / XP / Vista and Mac OS 9.0 / OSX / Linus