Identifing the FDD Header
If you have a floppy disk drive and want to find the header on the motherboard, begin by opening the computer case. Find the back of the floppy disk drive and look for a flat ribbon cable. Follow that to the header on the motherboard. If your computer doesn't have a floppy disk drive and you want to see whether it has a header so you can add one, look for the ribbon cable from the hard disk. It is similar to the floppy disk drive cable, and the FDD header is often adjacent to the IDE/ATA hard drive headers. The FDD header is also generally marked on the motherboard with "FDD" or "FDD1," "FDD2," etc. if there are multiple headers. If you still can't find the FDD header, refer to the owner's manual for the motherboard.