Yes they rock. I have used one daily for 5 years or so (4 port version) at 1024x768 on a Sony 17SFII and like it. I also have a 12 port BlackBox model that isn't used because I never got around to getting enough cables for it, but it does work well at higher resolution when I did use it.
The major difference between the 2 is the Blackbox has jumpers on each video port to force whatever resolution you like (so if you are using one machine you can boot another at the resolution you like without having to switch to that machine when you power it up).
What kind of KVM are you using now that has issues above 640x480?
The major difference between the 2 is the Blackbox has jumpers on each video port to force whatever resolution you like (so if you are using one machine you can boot another at the resolution you like without having to switch to that machine when you power it up).
What kind of KVM are you using now that has issues above 640x480?