Macintosh HDI-20 External 1.4MB Floppy Disk Drive

The Macintosh HDI-20 External 1.4MB Floppy Disk Drive was an optional external floppy disk drive manufactured by Apple Inc. (then Apple Computer) for use with their PowerBook Duo series of sub notebooks and also the PowerBook 100 (no other 1xx series models are supported) by means of a custom HDI-20 connector. The drive requires no drivers or other software and appears as a normal floppy drive when attached. PowerBook Duo systems require a PowerBook Duo Dock (or mini dock) to be attached to provide the HDI-20 port. A smaller, cheaper solution is to use a Macintosh PowerBook Duo Floppy Adapter to provide the port.

The drive itself is somewhat larger than the USB floppy disk drives we are used to today.	The front of the drive with flip up cover.
Another shot of the front, this time with a floppy disk inside the drive.	Here you see the older style rainbow Apple logo.
Here is the computer interface. The connector is an HDI-20 interface (hence the name) with a sliding lock. Pulling the connector slides the casing back and releases the connector from the socket.	The underside of the drive has footpads for resting on a table.
And finally, here is a photo of the drive with its cover closed.

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