Adesso ACK-5010PW Mini PS/2 Keyboard with Trackball (white) Mouse Included: Built-in trackball Palm Rest: N/A Function Keys: 12 Hand Orientation: Right Operating System Supported: Windows 8/Windows 7/Windows Vista/Windows XP or below Dimensions: 1.30 x 13.30 x 6.80 (H x W x D) Mouse DPI: 200