Summary: I was hesitated to buy since prior reviews are not comforting. I took a gamble and glad I did. I have been using this unit for almost 2 months and it has been working flawlessly. Video quality is superb, Keyboard and mouse switching is instant super fast. I'm using wireless laser keyboard and mouse on console ports without any issue. It has extra 3 usb ports for other usb device sharing. The only complain I have is their cables are too thick and stiff.
Summary: I purchased this product to use with a new computer with a GeForce GTX 295 video card and dual 24 in monitors (1900x1200 native resolution). Suffice it to say that the switch was unable to provide reliable results at this resolution with Windows 7 64-bit and even at lower resolutions, the picture was noisy. I returned this switch and replace it with one from I O Gear (4-Port Dual View Dual-Link DVI KVMP Switch with Audio) and it works like a charm.
Summary: I've been using this switch for about 2 years now without any major issues. The only problem I had with it is that most Linux distros have trouble with the second monitors resolution because they only see the KVM switch and not the monitor.
Summary: It worked for a day or so, then started loosing the keyboard and mouse. A reset of both systems might fix it, but then as I was working on software, the keyboard and or mouse was gone again! Lousy piece of junk. Do not purchase! Now I have to see if I can get my money back. I huge waste of time on my part dealing with this.
Summary: I also bought this unit due to a review which bragged about the reliability. Recently I had resigned my workstations for about 3 months, and have had nothing but problems since, the biggest being only 1 monitor working. After about 5 attempts at rebooting the switch with tech support I now face a bunch of red tape with RMA requests and the like.
Summary: I bought this switch because other reviewers said it does what it says it does. It doesn't, though. When I first installed the Linkskey DM702AUSK, following the instructions precisely, it worked well. A couple of days later, I had my first problem. After switching from computer 2 to computer 1, both the keyboard and mouse stopped working. A restart fixed it, but it was still annoying. A couple days later, the mouse stopped working. I didn't do a switch or anything.
Summary: Does what it says it will do. Able to switch 2 computers with 2 dual dvi monitors. I'm a little disappointed that the unit only comes with 2 sound cables. This unit was made for 7.1 surround sound but the additional cables are not included. Also, I've notice if my monitors have different resolutions (1900x1200 and 1440x900) the switch is a little buggy on windows xp 64bit. Monitors identity change from 1 to 2 and vice-a-versa. Other than that it works great.