Macally USB 2.0 Slim Keyboard and Optical Game Mouse Combo for Mac with 2 Built-in USB Ports (iKey5COMBOB) 104 key slim USB 2.0 keyboard Thin keycaps with sensitive and responsive touch 800 or 1600 DPI optical resolution switch button on the mouse Optimized for gaming at 1600 DPI CD Eject and volume control buttons Low profile for easy storage inside a keyboard drawer Non-slip rubber side grips 2 Built-in USB 2.0 ports