The Macintosh SE is similar to the original Macintosh models that came before it with a new front case design and the addition of either a second 3.5-inch floppy drive or Apple’s first offering of an internal hard drive. The floppy disk drive (or drives) read 800 k disks and the hard drive was available in 20 MB or 40 MB options. The internal RAM available was 1 MB or 2MB. Like the original Macintosh, the Macintosh SE had a 9-inch black and white (monochrome) display made by Sony.
This particular Macintosh SE originally shipped with two 800k floppy drives, but was later upgraded with a hard drive. To accomplish the upgrade, the upper floppy drive was removed and replaced with a Maxtor-brand hard drive.
Also like the original Macintosh, the signatures of the team that developed the original Macintosh were engraved inside the back case. New vents were added to the back of the Macintosh SE, but the signatures were not moved to reflect the placement. Thus, some signatures have been partially obscured. The signature of “Steven Jobs” is visible near the center.
This Macintosh SE was purchased from a family in the town where I live and it exhibited a curious rattle when I picked it up. During the restoration process, I opened the case and found several items inside, likely inserted through the slot left from the removed floppy drive. The rogue items included a comb, a custom metal printing plate, about 20 flash cards on the topic of electronics, a slide rule calculating concrete volume, a metal ruler, a protractor, a handwritten personal note, $1.02 in change (two fifty-cent pieces and 2 pennies), staples, a curtain hook, and a Polaroid photo of two children (perhaps depicting the perpetrator of this minor offense).
Source: EveryMac