As the title says, I've got a 15" 1.67 GHz Powerbook. I ordered a new RAM card off OWC a while ago, and just got around to installing it now. The card specifications are as follows (taken from the order invoice): SO-DIMM 1.0GB Samsung Factory PC2700 DDR 333MHz 200 Pin SO-DIMM Module M470L2923BN0-CB3 S/N: 4150092 I opened the panel in the middle of the computer's underside, aligned and slid the card into the top slot, then pushed it down and closed the computer back up. I turned the computer on a few minutes ago, only to see that it was still only recognizing 512 mb RAM. Can anyone tell me what I did wrong, or what the deal is? On the Apple website, it lists a procedure for installing Powerbook RAM that involves removing the keyboard, which I did not do, because I don't think that applies to my model. Thanks for any help you can offer.