Tripp Lite's 4-port Desktop USB KVM Switch is the optimal solution for controlling up to 4 USB computers from one VGA monitor and USB keyboard/mouse. Manually switch between connected computers using pushbuttons or hotkey controls; or, monitor connected computers automatically via Auto Scan Mode. The B006-VU4-R is operating system independent, and works with all computers that have an available VGA and USB port. It supports video resolutions up to 2048 x 1536, and features a compact design that does not require software or complicated set-up procedures. Control up to 4 USB computers from a single VGA monitor and USB keyboard/mouse Port LEDs illuminate Light Orange to indicate a computer is connected, and Bright Orange to indicate it is the selected port Supports video resolutions up to 2048 x 1536, DDC2B No software or complicated set-up procedures required Manually switch between connected computers via front panel pushbuttons or hotkey commands Automatically monitor connected computers via Auto Scan Mode Compatible with all operating systems Compatibile with most mice; including scroll mice 1 Year Limited Warranty Applications Small Office/Home Office (SOHO). Control up to 4 USB computers from a single VGA monitor and USB keyboard/mouse. Package Includes B006-VU4-R 4-port USB KVM Switch External Power Supply (Input: 100-230V, 50/60Hz, 0.5A / Output: 5.3V, 190mA) Owner's manual replaces b006004r.