Pros: DVI, keyboard, and mouse switching works great. Price is very good for a four port DVI switch. Includes four USB cables, which is pretty generous, considering the price.

Cons: D-sub signal is very weak. When I use the switch with d-sub, the picture is extremely blurry and only works well at very low resolutions. I ended up just plugging the one computer that needed d-sub directly into the monitor and switching with the monitor controls, which works okay.

Overall Review: If you only need DVI, this switch is fantastic.

Pros: Solid build, inexpensive for 4 port DVI, with both DVI and D-Sub (maybe also the cons). Great customer response. This thing works for DVI switch if you are patient every time you use it. I did not try the D-sub but I bet it would work good just as other D-sub KVM given its simple tech. However, for DVI, a lot of times it does not tranfer the signal to the LCD. The reason is you must switch to the port first and start PC and wait all the way till the booting finish. A KVM should not have to work this way. Once the PC is booted it often jump to another port unexpected. According to their manual you need to switch it back the port you want. However, after you switch back the port may not get signal. You must have your finger on button to immediately switch it back after it jumps. Even so it does not garruantee you to have the port work. It's very painful. I have to return it. Bought the Starview 4 port 431DVIUA and it works after some tweak.

Cons: Must switch to the port first and start the PC; must wait for the PC finish booting, must switch back immediately after it automatically jump to another port. It's oversize expecially the width. It would use a big chunk of your desk space.

Overall Review: I think the company need to rethink about this product. The D-sub switch probably won't be used by many people who buy this. Otherwise they would buy D-sub KVM at less money. They could save the material and money and spend them to make the DVI better. The enclosed USB cable are not a good idea. For any person with 3-4 PCs probaly have spare USB cable alreay. A power adaptor should be provided instead of the USB cables. You would find how hard it is to find the exact power adaptor if you want to find one.

Pros: Good price, good idea, it covers everything need for KVM, audio(input/output) uses USB power, allows one additional device other the keyboard and mouse, and it works.

Cons: The DVI video quality is not acceptable. Resolutions that I have tried are 600x800x16, 1024x768x16, 1280x1024x16, 1600x1280x16, 1280x1024x32, 1600x1024x32 (with Barco 32" monitor), and 1920x1200x32 (with DELL 24"); none were acceptable.

Overall Review: 1) I didn't try other options, like VGA connection. 2) if configuration info can be available on screen, it would be a great help.

Pros: When it worked, I liked it. Then it died. And I didn't. I'm hoping Syba's support is helpful. Will update with my RMA results there.

Cons: Well, it died on port 1 after 34 days, then died all together on day 36.

Overall Review: When it worked, I liked it.

Pros: good construction

Cons: but didn't work for one of the four computers (compatibilty issue?) switching delay unsatisfactory for gaming.