Control up to 4 pc or mac computers from a single keyboard mouse and monitor and share any usb device between all connected computers the sv431usb 4 port rack mountable vga usb kvm switch with hub offers simple control of up to four computers from a single monitordisplay and usb peripheral set keyboard mouse the usb kvm switch features an integrated 4 port usb hub allowing you to share connected usb peripherals between the four controlled pcmac computers as though the devices were connected di