On 04-12-2009 06:55, Donald Drennan, donalddrennan at sbcglobal.net, wrote: > I swapped the RAM around in different slots, and now all of it works. I have a > total of 1 gig now. Glad to read that works! > Most of the cards have very little info on them. I chose the ones with the > most information written on them. You have to look on one of the chips, preferably the one with the most clear print. If needed use a magnifying-glass!! Use these info in: <http://www.chipmunk.nl/DRAM/ChipManufacturers.htm> and determine your unused sticks to use if they may be useable in your Mac. Jo Hissel