Just picked up a "2006 Mac Pro". The person I bought it from (Craigslist) said it's a 2006 Model: #A1186 (I'll try to find the serial tonight after a movie date with the wife.) He said it boots up but, there is question mark with a folder that comes up. I opened the side and pulled out the memory cards. Looks like two banks of 512mg (1gig per?) and 2 1G banks. Total 4Gs(?). I've never had or opened up a Mac Pro so, I couldn't (even if I could) see what possible CPUs it has. Is there anyway, minus booting up to tell what kind it is? It doesn't have a hard drive installed (missing the hd glides(?) in the first two spots.) and I won't get access to mess with it until tomorrow night. I go the logicboard number and google states it supports all the ranges of CPU that EveryMac has. (Just noticed 2008 possibly - http://everymac.com/ultimate-mac-lookup/?search_keywords=A1186) Any help will be appreciated.