4 Port Dual DVI USB KVM Switch - KVM Switches | StarTech.com
TRENDnet 8-Port USB/PS2 Rack Mount KVM Switch, TK-803R, VGA & USB Connection, Supports USB & PS/2 Connections, Device Monitoring, Auto Scan, Audible Feedback, Control up to 8 Computers/Servers
StarTech.com 4 Port Black PS/2 KVM Switch Kit with Cables - 4 Port PS2 KVM Switch - KVM Switch with Cables - VGA KVM Switch (SV411K)
TRENDnet 16-Port Rack Mount USB KVM Switch, VGA and USB Connection, Supports USB and PS/2, Auto-Scan, Device Monitoring, Audible Feedback, Plug and Play, Hot Pluggable, Rack Mountable, Black, TK-1603R