Question: I’m trying to get data off a 2.5 inch hard drive from an old laptop (a Macintosh PowerBook Duo 230), the drive is model: WDS-2120

It looks like a standard mini-IDE hard drive, except it only has 40 pins then a break and 8 additional pins -I would guess these 8 for jumpers.Instead of the normal missing 20 pin, the missing pin is in position 17.

Any suggestion on an adapter or the name of this connector type?

Answer: This is a PowerBook special and is not a PATA/IDE connector at all. It’s a SCSI connector! Apparently a very custom SCSI connector that isn’t really supported elsewhere, though it appears to be electrically (if not mechanically) compatible with standard SCSI-2 so an adapter is possible.

Some more info at: http://vintagemacmuseum.com/reading-powerbook-2-5-scsi-hard-drives/

There’s some discussion over at https://68kmla.org/forums/index.php?/topic/31589-40p-scsi-to-50p-scsi/

There are also devices available that emulate such a drive (using a SD card as backing storage). Note the pinout in the photo matches your drive.