Honestly I haven't a clue, but I've been looking at getting a KVM myself. There was an article a little while back in Max PC about quality KVMs and compared 2 or 3 of them... I know that's not much help, but they suggested spending 50-100 to get a decent/good one.
What's this thing do? That would be sooo cool if it wasn't going to hurt us. Melphina's Magelo