This is the smallest model from the first generation of PowerBooks. It was very thin and light for its time but didn’t have an internal floppy drive, which resulted in poor initial sales (before discounts). The logic board is based on a low-power version of 16-MHz Motorola 68000 coupled with up to 8 MB of RAM and 20 or 30-MB SCSI hard drives.
I have three non-working units and all of them need (at least) to replace bad capacitors. Their owner told me that I can keep one if I fix another for him.