Just picked up the PB150 off of freecycle this morning. Works great! 8mb of ram, 120mb harddrive, with O.S.7.6 . The whole unit is in very nice shape. It came in an Apple laptop bag. Which might be why it is in such good shape. I want to up the ram(out of a duo) and swap in either a 2gb hardrive or a CF card and use O.S.7.1.1 . The key board works very well and is nice to use. It looks good sitting with my PB180!