ATEN CS782DP 2-Port UHD 4K USB DisplayPort KVM Switch - allows to access two 4K-enabled computers from a single USB keyboard, USB mouse, and DisplayPort video console - Newegg.com
Aten Desktop 2 port PS/2-USB KVM Switch - CS82U
ATEN CS1308 8-Port USB PS/2 KVM Switch with 8 USB Cables
4 Port Dual-View KVM Switch with Audio and 2 Port USB Peripheral Sharing at Cables N More