The Macintosh SE/30 is a personal computer designed, manufactured and sold by Apple Computer, Inc. from January 1989 to October 1991. It is the fastest of the original black-and-white compact Macintosh series.
The SE/30 has a black-and-white monitor and a single PDS slot (rather than the NuBus slots of the IIx, with which the SE/30 shares a common architecture) which supported third-party accelerators, network cards, or a display adapter. Although officially only able to support 32 MB, the SE/30 could expand up to 128 MB of RAM (a significant amount of RAM at the time), and included a 40 or 80 MB hard drive. It was also the first compact Mac to include a 1.44 MB high density floppy disk drive as standard (late versions of the SE had one, but earlier versions did not).