IBM 4865 external 3.25 Drive: What card do I need?

[RGrun22]

Hello everyone,

I recently bought an IBM 4865 3.25in external floppy drive for my 5160, but I'm a bit at a loss as to what kind of card I need to connect it to the PC. According to some old documentation I found, and the cords on the device itself I obviously need some kind of external card that it came with when it was new. Does anyone know what kind of card I'd need? I can't seem to find any mention of a specific card on Ebay listings for this model of drive.

The connectors I'm referring to are the ones in this image:



Thanks!

 

[modem7]

Welcome to these forums.

The document that you pointed to indicates:

* The drive's 37-pin D connector will plug into the external connector of the floppy controller (pictured at [here]) that IBM supplied in the IBM 5160. ("The 4865 model 1 has a permanently attached 36' signal/power cable that attaches directly to the existing 5.25' diskette drive adapter on the 5150, 5155, or 5160 system unit.")

* The 4-contact connector supplies power to the drive (because the IBM floppy controller does not supply power). IBM supplied a power splitter cable with the drive. ("A customer installable power split cable provided with the 4865 makes system power available to the 4865.")


As for a software driver, in the 5160, you would use DRIVER.SYS per step 3 at [here]. If "/d:2" does not work, try "/d:3".

Note that you are limited to using 720K sized diskettes, and you will not be able to boot from the drive.

I do not know the pinout of the 4-contact power connector.

 

[Hawkeye0914]

For anyone else who might be looking at these. This is what the internal power connector looked like for these. Evidently extremely hard to find now.