Required Operating System
PC: Windows 10, 8.1, 7, Vista, XP (excluding Windows XP 64-bit); Mac: OS X v10.4-10.6
Recommended Input Device
USB port
Other System Requirements
1 AA alkaline battery required (included) Internet access required for certain features. Local and/or long-distance telephone toll charges may apply. To add 4-way scrolling, download Microsoft IntelliPoint at www.microsoft.com/hardware/downloads.