Floppy Drive Cable Pins

Like an ide cable most floppy cables also have a red strip along one side of the ribbon cable to indicate pin 1.

Floppy drive cable pins.

Each drive should be jumpered to act as drive 2. The printed circuit board provides a 2 by 20 pin card edge connector for each diskette drive with a locator key between pins 34 and 36. Floppy power connector sata data connector sata power connector built in usb 3 0 20 pin header cable 19 usb data transfer rate up to 6gbps 5 25 front bay mount design plastic front panel secc body nss. The reason that the standard cable uses pairs of connectors for the drives is for compatibility with different types of drives.

The cable interface provides a 2 x 17 pin header connector to each diskette drive with a locator key below pin 17. But ibm come up with an idea to avoid jumpering the floppies. If only one drive is used then leave the middle connector free. The printed circuit board provides a 2 by 20 pin card edge connector for each diskette drive with a locator key between pins 34 and 36.

The power cable from the atx power supply consists of 20 awg wire to a 4 pin female connector. The power connector on the 3 1 2 inch floppy drive informally known as the berg connector is 2 50 mm pitch distance from center to center of pins. Today if any floppy drive is in the computer it would connects to drive a and the end cable connected to the motherboard. Generally pin 1 is facing the power connector on the drive usually with the notch down pin 1 is on the left but just double check before connecting it.

3 5 drives generally use a pin header connector. The floppy channel fdd header or floppy connection is where the floppy drive connects to the computer. The plastic connector housing is te connectivity amp 171822 4 with female metal contact pins. The cable uses a 34 pin idc connector requiring a 34 pin device header and a 34 pin flat ribbon cable idc definition the connector size differ between the two drive types with the 5 25 drives requiring a larger connector.

Pin 1 where the red stripe is on a normal floppy cable is marked but you should still check against a picture of a floppy cable to make sure you connect it the right way. Make offer 1pc 5 25 4 pin molex to 2 x 3 5 floppy drive fdd power splitter adapter cable 2pcs set 4 pin male to 3 5 floppy drive fdd internal power cable adaptor 20cm 0 99. The original floppy cable required that each drive was jumpered to the right id. If wire 10 16 are twisted before the last connector the jumpering is avoided.

The table below provides the personal computer drive a pinout for either the 3 1 2 or 5 1 4 floppy drive.