4 Port VGA KVM Switch With Audio & Mic: USB VGA KVM switch provides a cost-effective way to share one USB keyboard, USB mouse, and VGA monitor to control 4 computers.Supports Audio speaker and microphone switch and output. Higher Definition Output:JideTech USB KVM switch supports high-definition image and supports maximum resolution up to 2048 * 1536, Support DDC and Automatic Identification high quality output.