I just thought I'd share my experiences with this product here so others might benefit. First of, for review/details see the Macenstein review here: http://macenstein.com/default/archives/678 Substitute the following for instructions installing it if you have an early 2008 mac pro like I do. 1) Ignore all the bits about removing screws except for the one holding the upper part of the fan bay. 2) If you have an 8800 GT, it's still worth removing it and detaching the power cable from the mainboard. 3) Instead of fussing and fighting trying to remove the RAM bay, the CPU cover, and the fan bay, add a long nosed set of needle nose pliers to the equation. 4) Pull out on the fan bay enough to dangle the ends of the SATA cables down behind the top leg of the fan bay where it attached to the chassis with the screw you removed 5) Using the long nosed needle nose pliers and a good light source so you can see what you are doing, attach the SATA cables to the two ports on the mainboard. 6) Follow along with the installation manual from that point on (i.e. routing the cables). Installation is far easier this way, and the fan housing chassis is quite capable of enduring your minor lifting to get the cables attached compared to all the fuss you would need to go through using the "proper" installation method. Aside from the minor installation hassle, great product for anyone wanting/needing the two additional SATA connections, or simply the additional availability of eSATA ports.