Pros: Easy to install, allows me to add 4 more drives, speeds seem good. According to the chip manufacturers website, with the new 5.5 bios it also supports RAID 5 and 10. I haven't tried that yet though.

Cons: None yet.

Overall Review: I was connecting my optical drive to this controller, so I couldn't use the included driver CD. Found drivers online at http://it.us.syba.com/support_download/download/73-0204-1.html Extract the ZIP, right click the controller in device manager, click update drivers, locate the extracted files, done. EZ Peezy.