Pros: good video, heavy enough

Cons: mediocre USB, no audio

Other Thoughts: I read the reviews first, so I knew sound was likely not to work and bought it anyway because the price was in an acceptable range and it looked heavy enough to not slide around on my desk, not tip with the weight of cables attached, etc, and it has lived up (and down) to expectations for the most part.

Wouldn't buy again or recommend because of the flaky USB. Otoh, I don't recommend against it really strongly, and even though it's within the 1 year manufacturer warranty I probably won't try to return it, because every manufacturer seems to have the same problem with USB. Probably not worth the bother of trading in, when the replacement is likely to have the same problems.

Pros: So, I have hooked up multiple systems, even a few i'm doing an OS Refresh on. Fairly stable, functional and clean. Data recovery pc I build from NE working awesome. Easy to press a button, bam, i'm there... Works like it says for that.

Cons: Audio in/out? Known working male male 1/8" headphone cables, no dice... Known working speakers also (basic 2.0) and known very well known good working headphones. No audio whatsoever. Please advise... Want audio out from tower, to main speakers... Seems obvious... input from pc's, output to speaker... right???

Other Thoughts: Wish the instructions were a tad more clear on the audio portion...

Pros: Good price, worked well for a year with minor but increasing video glitches.

Cons: As another user noted, occasional video flicker and/or cut-offs. Occasional video artifacts. These got worse over time.
After one year serious audio problems developed, loud humm is generated without warning. Switching inputs or power cycling the unit solves this, but it can come back within minutes.
We're retiring this unit. it's had a shorter lifespan than other StarTech products. To be fair we did work it pretty hard, with lots of fast switching between inputs. Will replace with a professional grade unit.

Other Thoughts: used only with video and audio output. no usb or mic in our setting.

Pros: Fast switching

Cons: USB doesn't work with Ubuntu 12.04/14.04, or Red Hat 6/7.

Other Thoughts: My primary reason for purchasing this was for easy switching between multiple KVM virtual machines. Upon connecting the USB cable, I would receive "device not accepting address ##" and "unable to enumerate USB device."

Pros: USB 2.0 over the PS/2 layout
DVI over VGA
Added on Audio and Mic.
Works over Windows XP, 2008 R2, 2012 R2, 7, and 8.

Cons: DVI ports need to be spread out just a little bit.

Other Thoughts: I've been looking for some KVM switch like this for sometime at the right price. I did not regret getting this.

Pros: Compact, good video quality (on digital DVI it either works or doesn't work, no fuzziness with digital), easy to use. Seems to work well on fully configured systems as long as you don't need to restart them.

Cons: As others have reported, it doesn't work with many motherboards and even certain BIOS on the same motherboard. Startup is where I encoutnered the failures I experienced.

On Zotac IONITX boards with the nVidia ION chipset, it won't boot Windows with a mouse installed (fails right before animated logo appears during boot sequence). Tried several USB mice, same problem with all. Disconnect the mouse, it boots fine (then you can connect the mouse and everything works, but that defeats the purpose of the KVM switch for us as system builders).

On shipping ION BIOS, no video at boot. Updating to new BIOS seemed to fix this (only had old BIOS on 2 systems, so not enough data to be certain on this).

StarTech tech support was unfamiliar with the problem and suggested I exchange. Newegg was great about the exchange, but replacement unit behaved exactly the same.

In short, this switch is not compatibale with a lot of the hardware you might be using.

Other Thoughts: If you are willing to chance it, buy this and see if it works with your hardware. If it does, I suspect you'll be happy with it. Otherwise, a KVM that doesn't work through a computer power cycle or doesn't support video is worthless, at least to me.

Pros: 4 ports, DVI and USB. Audio in/out switches! Supports at least 1680x1050 resolution.

Cons: USB Hub feature is more-or-less useless, since once the USB mouse and key are connected, windows complains about the hub being out of power. Occasionally loses the mouse/key when switching or power off/on. Occasional video flicker and/or cut-offs. Occasional video artifacts. I have problems with it about 1 out of 10 times, but that's too often IMO.

When there's a problem, switching off and back to the chosen port *usually* fixes the issue.

Other Thoughts: I will be replacing it once 4 port DVI/USB KVMs are the standard, instead of the exception... And NOT with another StarTech.

Pros: Well built and NOT finiky... it worked with 3 machines. Very happy! Manual switch is a PRO now... it's a very soft logic switch. To me, it's quicker and easier than the kb switching.

Cons: None yet.

Other Thoughts: If your device only supports analog DVI, be sure you have an analog cable for BOTH the device to KVM and from the KVM to monitor... All other digi devices, even with digi-only cables, should work fine!

Pros: The box is solidly constructed, the video is excellent. I had an analog KVM before I plunged into DVI, and now I am stunned at what I had missed out on.

Overall, a very professional looking unit.

Cons: Only one gripe: On all of my previous KVMs, I could switch between computers by just hitting a specific key sequence on the keyboard. This was at a cost of about 1/3 of this KVM! Bow I have to reach over and push a button... That's why I pulled a point...

Other Thoughts: I did a lot of looking around before I settled for this box. Read many reviews, looked up many features. There was always something wrong, e.g. if I wanted all the sound options, all of the sudden a PS2 mouse and keyboard were needed. Other KVMs had trouble with the Logitech MX Revolution - my mouse! Except for the switching issue described above, this one was nearly perfect. Would have liked the surround sound, but that's not vital.

Pros: Cheap compared to other 4 port dvi kvms. Solid construction.

Cons: 1. Does not pass through EDID monitor info so it will definatly not work with a Mac Mini (as told to me by their tech support, and not listed on their website or in tech specs anywhere).

2. It is very finicky about when things are plugged in and if its turned on. You might find yourself unplugging the power of this device and your computers several times trying to figure out which order suits it.

Other Thoughts: I do not recommend this as a quality KVM switch, but it will do the job for PC's as a budget switch.