Summary: EDIT: After contacting IOGear support, I was informed that the product no longer supports the keyboard shortcuts that I stated weren't working for me below. I'm deducting a star for that. Purchased this KVM after buying a less expensive one that didn't work well to switch between my linux desktop and laptop/docking station. Eventually found a blog post that mentioned this one works, which is the case. Switching takes a couple seconds, but is acceptable.
Summary: The pros for this item is the ease of setup for the novice user, and the ability to switch the audio. The cons are 1) you must use the supplied custom cables - if you are replacing a switch or want to use cables already in place, this is not the switch for you (the custom cables carry keyboard, video, mouse, and audio signals).
Summary: The device doesn't seem to consistently and reliably relay accurate EDID information from the monitor to the Xorg driver, regardless if it is nvidia or intel. Have to resort to explicit modeline configuration.
Summary: My home desk runs up to 4 computers, a home server, a desktop with tv video, a personal laptop, and often a company laptop. I had a two port KVM, but it needed replacing. It wasn't USB and didn't have any audio cables. This 4-port box was delivered 2 day early. Kudos to Tiger Direct! It is pretty and well built, but lives under my desk. More important, it has long sturdy cables that reach all my computers easily, as they are space all over the floor and desk.
Summary: Out of the box I had problems, nothing worked and it hung up again and again. Had to keep rebooting and hooking up an extra monitor just to see what was going on. Seems the NEW keyboard I decided to use with the new switch was defective. Got an old one and everything works fine. Only problem is in getting used to the keystrokes. I had a different switch that used PS2 and a different key combination. The KVM has been working fine since replacing the keyboard.
Excerpt: I now run four computers off of my 60" LED smart TV via wireless keyboard and mouse, and I can toggle between them quickly. All cables are included, I just plugged everything in and it worked great.
Pros: This device is a workhorse. I've had one and used it daily since October of 2007. The only issue I've had is that a lightning strike that took out several electronic systems in my building also took out the sound capabilities of this switch. However, the KVM part still works great. Basically, it does what it is supposed to.
Cons: Can't think of any cons after using the unit for over 5 years
Summary: It works. But not very well - you need weird keystrokes to go from attached computers - scroll lock scroll lock enter. I only have 2 computers attached, but when I want to go from one to the other, it has to jump thru all ports instead of only to the 2 active ports. It has managed to negatively impact the monitor - as much as I have messed with the settings, the left edge of my screen is off the monitor.