Hi, I tried searching but couldn't find whether or not this ram will work for my 12" G4 Powerbook. It says on the site it works for mac, but doesn't specify which ones. Buffalo 1GB 200-Pin DDR2 Notebook Memory I have a feeling it probably won't, but it's on sale, and I have wanted to upgrade my ram, so I thought I'd be sure Also , I'm thinking of getting a LaCie 500GB USB 2.0 FA Porsche Design External Hard Drive. On the customer reviews it says that it won't go into sleep mode and does a constant hum. Wouldn't you be able to just turn off the power? Sorry if this is a stupid question , but I have no experience at all with external hard drives, so I'm not sure if they have to be on at all times or what.. Thanks!