Hello, I have noticed some uncertainty about this question and since I have used a number of solutions to this problem I will add a few words about it: A simple mechanical switch box between two or more computers and a single monitor can be used without causing damage to computers or monitor. The limitation is the video quality. Anything much beyond standard VGA will either look bad because of shadows in the image, or will result in loss of sync. If you are only going to look at two servers occasionally, in case a reboot is necessary or for system administration at 640x480@60Hz, this is a perfectly useable solution. It goes without saying that you need two keyboards (and mice if used). These boxes can be had with standard SVGA monitor connectors for about $20 and up. Belkin, Cybex, Omni, Adder, Lehmann and a number of other manufacturers make special switching stations with video amplifiers and high-grade shielding that allow electronic switching between 2-64 computers (by cascading) and one monitor, one keyboard and one mouse. Any catalog of commercial PC equipment (Misco, Comp. Warehouse) will offer these for about $100 - >$2000 according to the number of PCs you want to control from your monitor, keyboard and mouse. These are guaranteed to work at resolutions up to 1600x1280@75Hz and even higher, at video bandwidths of 200MHZ and higher. Switching is almost instantaneous and some devices are capable of automatically switching between computers at preset intervals and preset sequences. Some of these can switch between PCs, Apples, Unix workstations and various terminal interfaces. We use these devices for monitoring many communication servers or dedicated computers in arrays used to monitor and control scientific and medical equipment. I also have a 4 to 1 box to switch between my OS/2 and NT desktop computers and keep 2 inputs free for computers that I am servicing. It attaches to my 21" EIZO monitor and cost about $200. It is not always handy, however, to have to switch back and forth between computers rather than just look at a different monitor. Your specialized use will dictate what is best. Hope this is of use to someone. Best regards, Bruce ---------------------- Bruce Boschek - Giessen, Germany PCBUILD only works if you contribute. Send your messages to be posted to: [log in to unmask]