ran off of a 800K Floppy Disk and 128 Kilobytes of RAM, no hard drive, not even a SCSI (Not until the Mac Plus, IIRC). I am sure you meant to put in there 128 kb instead of mb. 128 mbs was more than hard drives of the day could store on them. :)

The "Fat Mac" or Mac512K offered 512 kb of RAM, then the Mac Plus came along and changed everything with SCSI ports, 1 mb of RAM, etc.

Later in 1987, the Mac SE came out (I own one) and had an internal expansion port, something the Mac really needed to be taken seriously in the corp environment. How else could they drop in a Network card? Something that Apple didn't copy from Xerox, was the built in networking, at least not until later.