Aten KL1508N 8 port CAT5 19" High Density Dual Rail KVM switch in a sliding housing with top and bottom clearance for smooth operation in a 1U high rack features Dual Rail operation - LCD monitor slides independently of the keyboard/touchpad, A dedicated console port for management from an external console - plus an extra PS/2 mouse port for external mouse use with the integrated LCD console and two level password security - only authorized users view and control the computers - up to four users plus an administrator with separate profiles for each. Data Sheet Manual