Min Operating Temperature:-10 °C, Max Operating Temperature:40 °C, Humidity Range Operating:5 - 80%, Interfaces:1 x USB - 4 PIN USB Type A, Connectivity Technology:Wired, Buttons Qty:3, Movement Detection Technology:Optical, Features:Programmable buttons, scrolling wheel, Interface:USB, Compliant Standards:UL, TUV, VCCI, BSMI, GOST, SASO, CB, MIC, FCC, WEEE, ACA, Cables Included:1 x USB cable - integrated, Compatible with Windows 7:"Compatible with Windows 7" software and devices carry Microsoft's assurance that these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7., OS Required:Microsoft Windows 98/2000, Microsoft Windows XP Home Edition, Microsoft Windows XP Professional, Microsoft Windows XP Tablet PC Edition, Microsoft Windows XP Media Center Edition, Microsoft Windows Vista, Apple MacOS X 10.1 - 10.4.x