Summary: I was quite please with this switch, when it first arrive. Easy to set up among 4 PCs. Woked extremely for the first 2 months, then it just wouldn't power on anymore. Just completly died. I even tried a different power supply. Should have lasted much longer. Will be looking to at a different brand.
Summary: This IOGEAR unit is a "must have" brand in our opinion. Just the fact that this model allows you to hot-plug PCs makes it a "rare bird" and it blows away it's competition. Buy it with cables included and no other brand can come close to IOGEAR's value.
Summary: One of the things I like about the ExtremeX series of IOGear KVM switches is their weight. They stay where you put them and when you need to push a button, which isn't too often, the unit stays put. I have hooked up 3 different computers to my 4 port IOGear KVMP and am able to quickly switch from system to system either by typing the shift code on my wireless KB or pressing the appropriate switch on the box. It has always worked.
A step backwards from PS-2, issues with some keyboards/mice
J. Bryan, Amazon
17 March 2012
Summary: I bought the GCS1734 4-port USB KVMP to replace an older IOGEAR GCS84A 4-port PS-2 KVM so I could use it with a wireless mouse. It sort-of works, but it's a step backwards from the older KVM. The hot keys are more complicated, and it doesn't support some keyboards. The old PS-2 KVM used a quick double-tap on the left or right control keys to switch monitors. Simple, and easy to do with a guitar or scope probe in the other hand.