Logitech MK550 K920-002555X Black USB RF Wireless Wave Combo (K350 + M510) Mouse Included: Yes Mouse Interface: USB Palm Rest: Yes Mouse Color: Black Power Supply: 2 AA Batteries Scrolling Capability: Tilt Wheel Operating System Supported: Windows XP, Windows Vista, Windows 7, Windows 8 System Requirement: USB port CD-ROM drive or Internet connection
