Exactly what 800K 3.5 drive do I need?

["John Jacobs" <jjacobs@hager.net>]

Hi, I've got a IIe and recently got an 800K 3.5 drive. I'm pretty sure it's
from a Mac. Anyway, on my IIe the 5.25 drive has a 19pin connector, and this
800K daisy-chains in there just fine. I made it slot 6, D2 and when I do a
cat ,d2 or something like that its power light DOES come on, but there's an
error reading the disk.

1. Exactly what am I looking for a 3.5 800K drive on the IIe with minimal
fuss.

2. Do I need another floppy controller, or will the one I have now work?

Thanks!