I have a Cybex SwitchView 4-Port KVM Model SV-4 for sale on eBay:

http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MESE:IT

It is just listed and there are no current bids. Bidding starts at one
cent, and there is no reserve!!

Included with the KVM a

a.. The original manual
b.. Four sets of mouse and keyboard cables that run from your machines
to the KVM.
c.. Four high-quality monitor cables that run from your machines to the
KVM.
This has been an extremely reliable unit; no freezups or switching problems.

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If you are looking for a solution to sharing one set of speakers across 2 -
4 machines, check out my auction for a very nice, very inexpensive mixing
board:

http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MESE:IT

The current bid is $5.50, there is no reserve and the auction ends on
Feb-27-05 17:00:00 PST