IOGEAR USB to PS/2 Adapter for Keyboard/Mouse, GUC10KM Works with any USB compliant system with PS/2 Keyboard and PS/2 Mouse Ports Keyboard and Mouse Can Be Attached to Portable Computer Simultaneously Supports wheel mice USB Bus Powered Requires no IRQs For PC users: Windows 98, 98SE, ME, 2000, XP and Available USB port For MAC users: Mac OS 8.6 or greater and Available USB port 3 Year Warranty