With the “SE” denoting “System Expandable”, the Macintosh SE was the first compact Macintosh to feature a PDS expansion slot. It also added an internal hard drive option, a dual floppy disk drive option, the Apple Desktop Bus (ADB) and a cooling fan. It retained the 8 MHz Motorola 68000 processor and 4 MB RAM limit of it’s predecessor, the Macintosh Plus.

In 1989, the Macintosh SE FDHD replaced the original Macintosh SE’s 800 K floppy disk drive with Apple’s new 1.44 MB high density floppy disk drive (Floppy Disk High Density). Later that year Apple re-christened these drives “Superdrives” which replaced the FDHD badging on the Macintosh SE.

This machine features 2 MB RAM, an internal MiniScribe 20 MB SCSI hard disk drive and a Shiva Etherport SE ethernet card in the PDS slot. It boots into System 6.0.8.