The CAB831HDU 8-Port USB (Universal Serial Bus) 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 (Universal Serial Bus)-controlled PCs or servers from a single console. Featuring a rugged & durable design, the USB (Universal Serial Bus) 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 & RACKCONS1916 Rack Mount LCD Consoles. A scalable & versatile KVM solution, the USB (Universal Serial Bus) 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 & free lifetime technical support. The Star Tech.com Advantage Designed to work with the 1UCABCONS series LCD Console, expanding control capability Compact design & rear cable connections occupy only 1U of space even when attached to an LCD console Cascade support means that you can control up to 64 PCs from a single console