Attach the Ribbon Cable. Floppy cables have a twist in the cable. A Drive goes after the twist. If you have a second B Drive, this goes before the twist. You need to use a cable with the proper connectors for each type you use.
Many floppy cables come with connectors for each type on each side of the twist.
Always check Pin 1 on the ribbon cable connector. The red edge of the cable is connected to Pin 1. If you accidently reverse this, your drive won't be damaged, it just won't work, and the floppy drive light will stay on all the time until the error is rectified. Consult your motherboard's manual to determine which is your floppy controller. Double check your work.