The cab831hdu 8 port usb kvm switch module is designed for use with startechcoms 1ucabcons series 1ucabcons 1ucabcons17 1ucabcons19 1u lcd rack consoles allowing control of up to 8 usb controlled pcs or servers from a single console featuring a rugged and durable design the usb kvm module fits neatly behind your rack console to provide upgraded functionality while saving space in the rack the cab831hdu is also compatible as a replacement kvm module for the rackcons1708 rackcons1716 an