<< 500MB of storage. It comes with the OS and a library of freeware and shareware. Plug and play. >> Careful, this is a IIe. The FOCUS drive for the IIGS comes with quite a bit of freeware and shareware (it seems that way anyway), but the IIe FOCUS is just about barren: ProDOS, Basic, Copy II+ is just about all that's on the drive. Jay