4-Port 1U DVI-I USB KVM Switch 4X6FT Cables Incl Audio USB Switch
By IOGEAR

The IOGEAR DVI KVMP Switch GCS1764 charts a revolutionary new direction in KVM switch functionality by providing an interface for today's digital monitors while integrating a 4-port USB KVM switch with USB peripheral sharing capabilities. As a KVM switch, the unit allows the user to access four computers from a single USB keyboard, USB mouse, and monitor, and also share among the computers peripherals such as external hard drives, printers and scanners. ... 

2-Port KVM Compact USB Switch with Audio & Cables
By Tripp Lite

The B004-VUA2-K-R is a 2-port Compact USB KVM Switch with optional audio and microphone switching function. It allows you to access, control, boot and reboot two USB-enabled computers from a single console (keyboard, monitor and mouse). The independent audio/mic switching function allows an uninterrupted audio experience ... 

KVM-221 2-Port USB KVM Switch Desktop with Audio and 6-ft Cable
By D-Link Systems

Control two computers using one monitor, USB keyboard, and USB mouse with D-Links 2-Port USB KVM Switch with Audio Support the KVM-221 allows users to effortlessly control two systems without having to buy additional computer peripherals. It is ideal for the home office where business files are kept on one computer and personal files on another. ...