Logitech Wireless Performance Combo MX800, Backlit Keyboard, Wireless USB Mouse for PC Illuminated keyboard with smart backlighting: Type comfortably, even in low light, with intelligent auto-illuminated keys Laser-etched Perfect Stroke and Incurve keys: Positions your fingers for optimum comfort and smooth, whisper quiet typing Dark field Laser Tracking mouse: Precision tracking on more surfaces, even on glass, plus Hyper-Fast or click-to-click scrolling and customizable thumb buttons Unifying receiver:One tiny USB receiver wirelessly connects both the keyboard and mouse to the computer PC compatible: Works with Windows 10 or later, Windows 8, Windows 7, Windows Vista, Windows XP. System Requirements: Internet connection (for software download)