ROCCAT Tyon All Action Multi-Button USB Gaming Mouse - White Maximum dpi: 8200 dpi Operating System Supported: Windows XP/Windows Vista 32/64-bit/Windows 7 32/64-bit/Windows 8 / Windows 8 Pro System Requirement: USB 2.0 port Internet connection for driver installation Package Contents: ROCCAT Tyon - All Action Multi-Button Gaming Mouse Quick-Installation Guide