This is a very nice Commodore 2031 disk drive. This was built a long time ago, not sure of the actual date, but it's about 30 years old. Yet, it still works very well. I've used it myself in the past and recently tested it one more time for this sale sale.
The 2031 looks very much like a 1541, the case is almost identical except for the coloring and the cutout on the back for the communication port. Actually, the coloring is the same as the early VIC-1540 disk drive, a nice beige color. This drive uses 5.25 inch floppies just like the 1541, but uses the 4040 format, which is almost the same as the 1541, but not quite.
This drive uses the IEEE-488 port on the back for communication with the computer. It will plug directly into any Commodore PET or CBM computer. Or if you have a 64 or 128 with an IEEE-488 interface, it will also work with the 64 or 128. It does not use the serial port connection like the 1541 uses, however, it is much faster due to the whole byte at a time communication rather than one bit at a time like the 1541 uses.
When the PET and CBM computers were popular, they used those huge dual drives. They took up a lot of desk space and were very expensive. Since most users didn't need both drives in the dual drive unit, Commodore came out with this single drive at a much lower cost. And it could still use the same 4040 formatted floppies if that is what you were already using.
Cosmetically, this disk drive is flawless. Perhaps the only objectionable thing about it can be seen in the 4th photo. Look close and you'll see the sticker on the lower right corner is slightly curled up on the bottom. A little glue will probably fix that. You'll have a hard time finding a nicer looking 2031.
I always combine shipping. Just let me know when you are finished offerding and I will calculate the total cost and send you an invoice through .
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