I've included 3GB of unbuffered ECC Ram (specifically 2GB of SAMSUNG samsung M391B5673GB0-CH9 and 1GB of Hynix HMT112U7BFR8C-H9). The server was actually running on standard non-ECC Ram without issue but HP recommends ECC Ram.
HP ProLiant N40L NHP Micro Server Duel core Network Storage NAS Raid 4-Bay SATA. You want to make sure that you can make the most of your existing computers and office equipment. For Limited Time include Free 250GB Sata Drive.