DoubleSight PC Expanion
 

"The PC Expanion from DoubleSight, maker of dual-LCD display setups, is a “thin client” of sorts, designed to allow the user to connect a monitor, PS2 mouse and keyboard, and speakers to a remote machine via only an Ethernet cable. Why, you ask? Well, if you are the owner of a small business, for example, and you need to set up an additional workstation location but do not want to spend much cash doing so, you can use the PC Expanion to connect as another user to the remote machine. As long as the remote machine has the specs to handle it, one can connect up to ten separate PC Expanions (this requires at least a 3.4GHz P4 with 2GB RAM, or the equivalent)."

http://www.xyzcomputing.com/index.ph...d=400&Itemid=2

I have a thin client that I bought once from Blackrabbit for €20? it works flawlessly also, this thing seems a bit too expensive;