Zonet 4PORT USB HDdb KVM Switch with Audio & USB Hub Zonet KVM3324 4-Port USB KVM Switch General Features: Blue color Control four computers with one keyboard, monitor, and mouse Superior video quality of up to 1920 x 1440 resolution Built-in Audio ports for PC sharing Built-in USB 1.1 hub for sharing USB devices Hot-key push button PC selection Auto-Scan LED display for PC monitoring