STARTECH 4 Port Professional Vga Usb Kvm Switch SV431USB, 4 - Console Interface(s): USB Type-A (4 pin) USB 2.0, 1 - Console Interface(s): VGA (15 pin, High Density D-Sub), 4 - Host Connectors: VGA (15 pin, High Density D-Sub), USB B (4 pin), Audio: No, KVM Ports: 4, PC Interface: USB, PC Video Type: VGA, Number of Monitors Supported: 1, Rack-Mountable: Optional, Cables Included: No, U Height: 1U The SV431USB 4 Port rack mountable VGA USB KVM Switch with Hub offers simple control of up to four computers from a single monitor/display and USB peripheral set (keyboard, mouse).