This 4 port usb 30 hdmireg kvm switch lets you control four hdmi computers with a single monitor keyboard and mouse the kvm also features 35 mm audio and a built in 3 port usb 30 hub convenient and cost effective usb 30 peripheral sharing this kvm switch offers a built in 3 port usb 30 hub that39s separate from your hid keyboard and mouse so you can share usb peripheral devices between each connected computer and avoid the expense of separate equipme