The 4-Port USB KVM Switch lets you manage four PC’s with just one set of keyboard, monitor, and mouse. Switch between four PC’s with a simple press of a button! Separate sets of KVM cables are included with the KVM Switch, so users can start controlling 4 PC’s instantly. The KVM cables also provide power to the KVM Switch, eliminating the need for a power adapter. Hot Key operations provide immediate access to features such as computer switching, and auto-scanning. With its Hot-Plug, and Audible Feedback, the 4-Port USB KVM Switch is the perfect choice for managing multiple PC’s. -4-Port USB KVM Switch. -USB Keyboard/Mouse emulation with 4 sets of detachable KVM Cables. -Supports Microsoft IntelliMouse, Optical Mouse, Logitech NetMouse and more. -Compliant with Windows 98SE/ME/2000/XP/2003 Server, Linux, and Mac OS. -High Video Quality, up to 2048 x 1536 VGA resolution. -Multi-Platform support for PCs, Macintosh G3/G4, iMac and Mac Mini. -Auto-Scan and LED display for PCs monitoring. -Hot-Key, push button and Windows-Based client switching software. -User definable Hot-Key (Windows Only). -Plug & play and Hot-Pluggable. -USB Interface Power method. -2-year limited warranty.