Vintage Epson SMD-400 5 1/4" Blade Connector
Converted 1.44MB 3.5" Floppy Drive
Separate converter module behind drive as shown.

Have seen this model listed as a 720K Drive for Commodore
Amiga/Atari Computer
This uses a 1.44 Drive and may be compatible as well.
Some red dots on bezel removable with some thumbnail effort.
Tested with other 5 1/4" Drives on the same controller