Buy.com has a TRENDnet TK 209i – Monitor/Keyboard/Mouse/Audio Switch – 2 Ports for $28.99 with Free Shipping. This switch allows for switching between a USB and PS/2 computer. Also switches speakers and mics.
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- TRENDnet’s TK-209i 2-Port USB and PS/2 KVM Switch with Audio & Microphone Kit lets you control one PS/2 and one USB enabled multimedia PCs with just one keyboard, monitor, mouse, microphone, and a set of speakers. TK-209i not only allows you to share your monitor, keyboard and mouse but you can also share microphone and speakers.