TrendNet (TK-804R) 8 Port Stackable Rack Mount KVM Switch with On Screen Display - Supports both USB and PS/2 connections to console port, High video quality; up to 2048 x 1536 VGA resolution, Built-in daisy-chain port for cascading up to 8 levels (64 computers), Password protection with Auto timeout logout, Plug & Play and Hot-Pluggable, Standard 19” (1U) rack mount design, Retail Box, 1 year Limited Warranty