Control 2 Computers - Access to four computers with a VGA monitor using a single keyboard, monitor and mouse (Wireless USB keyboard / mouse supported); 4 sets of KVM cables included; Compatible with Windows, Mac and Linux OS systemSuperior Video Quality - Supports up to 2048 x 1536 resolution offers crystal clear video clarity even on large displays with no delay or signal lossMulti-Switching Methods? Instantly switching back and forth between 4 VGA systems / computers via keyboard hotkey command, front panel button or the external desktop controllerActive Port Detection? Auto-scan and skip the inactive source and automatically switch to the next powered-on portNo Adapter Required - Bus-powered, does not require additional power source; An entirely plug-n-play solution with compact design makes it ideal for home and business environment, workstations, test stands or anywhere multitask between computers is required