Apple USB Translucent - TEAL BLUE Keyboard for Mac, iMac G3, G4 and other Macintosh systems with USB port, M2452, 97-Key Apple BLUE Keyboard M2452 USB 97-Key , USB 97 keys and two USB ports on each side 97 keys and 2 USB ports fully compatible with Macs equipped with a USB port This keyboard will not with work PCs. Works only with Macintosh systems.