The 4-Port USB KVM Switch lets you manage four PC\'s with just one set of keyboard, monitor, and mouse. Switch between 4 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. Manage up to 4 computers/servers with one set of console devices USB keyboard/mouse emulation with 4 sets of detachable KVM cables Compliant with Windows, Linux, and Mac OS High video quality, up to 2048 x 1536 VGA resolution Auto-Scan and LED display for computer monitoring Keyboard status restored when switching between computers Computer selection by front panel push buttons, keyboard hot key commands or Windows-based client switching software* User definable hot key (Windows only) Plug & Play and hot-pluggable USB interface power method 2-year limited warranty