Mouse Included: touchpad Buttons: 2 Palm Rest: molded wrist rest Normal Keys: 88 Operating System Supported: Windows 98/ ME/ 2000/ XP/ Vista Windows Vista: Certified for Windows Vista Features: ACK-540PW Mini Keyboard provides the high-end graphics & pixel-point control that allows you to work quickly and efficiently. The Mini-Input combines the most precise control into one powerful computing device. Enhanced 88 keys keyboard with embedded numeric keypad, 12 dedicated function keys and built-in Touch pad technology, this keyboard will be the best companion.