The CAB831HDU 8-Port USB KVM Switch Module is designed for use with Star Tech. com\'s 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 and RACKCONS1916 Rack Mount LCD Consoles. A scalable and versatile KVM solution, the USB module can be cascaded with multiple KVM switches, delivering control of up to 64 computers in total. Backed by a Star Tech. com 3-year warranty and free lifetime technical support. The Star Tech. com Advantage Designed to work with the 1UCABCONS series LCD Console, expanding control capability Compact design and rear cable connections occupy only 1U of space even when attached to an LCD console Cascade support allows you to control up to 64 PCs from a single console