USB to Floppy Drive Compatibility Chart
The following information is to help us configure your dip switch settings on the USB Floppy device sold by PLR Electronics.
Current Known Compatibility List
Our “Current Known Compatibility List” can be found at – www.plrelectronics.com/FloppyToUSBUpgrades.pdf – If your drive is not on the list, please feel free to Contact Us.
Determining your drive
If your drive is not on our “Current Known Compatibility List then please read below.
Also refer the the following wiki entry about unknown drives.
Drive types and settings
These dipswitches change the behavior of the USB Floppy to match actual floppy disk drive behavior. Your machine may be satisfied with a partial match, or may want an exact match.
There are eight dipswitches on the usual USB Floppy model. Only dipswitch settings 1-4 are provided here, the others can be figured out more easily. Your floppy disk drive will originally be set for DRIVE 0, or DRIVE 1 and the jumper may be visible. Dipswitch 5 must be switched OFF for DRIVE 1 (standard computer), or switched on for DRIVE 0 (not as popular).
Dipswitch 7 and 8 are usually 720kb mode when both OFF, and 1.44mb mode when both ON. If your system is not capable of 1.44mb mode (high density disks) then leave them OFF. It is safe to try 720kb first, to help first-time installation. Leave dipswitch 6 as-is. If 720kb or 1.44mb is mentioned in the chart, then you must choose which one you are using first before changing dipswitches 1-4.
Note that we cannot promise these settings will work for your system, as any solder tech can reconfigure settings and they may have done so at the manufacturer that purchased these floppy drives for use in their product. We cannot make a master list of machines and dipswitches until we have customers from every segment of the market give us feedback after their success. We do ask and appreciate any help, by emailing dipswitch combinations to us at sales@plrelectronics.com. You may also choose to post in our forums by clicking on the top menu.
The chart is not in alphabetical order. If you don’t see your model listed, then try a similar model. The Sony MPF 920 and the TEAC 235 simple is a good place to start.
Floppy Disk Drive replacement chart
| Floppy Drive | Description and Dipswitches |
|---|---|
| Sony MPF-920 | Very popular drive, used in standard computers. Usual setting is DC on 34. Others not used.
|
| Teac FD-235HF-B291 Teac FD-235HG-C629 Teac FD-235HF-3201 |
Simple version of the Teac 235. Usually no user jumpers. Usual setting is DC on 34. Others not used.
|
| Teac FD-235HG-5417 Teac FD-235HF-6573 Teac FD-235HF-A579 |
Highly configurable version of the Teac 235. Large jumper system, 15-20 jumper pins. DC, RDY, and HO can be moved around or not used. 5 volt power may run thru 34 pin data cable. 
|
| Teac FD-235HF-C529 Teac FD-235HF-C929 |
Moderately configurable version of the Teac 235. There are 12 jumper pins labeled A-F. Below is the jumper chart:  The default setting per chart: (with Dipswitch 5 OFF):
See other TEAC charts for more dipswitch settings. |
| ALPS DF334-H015A | Configured by factory. Usual setting is DC on 34. Pin 2 is output high.
|
| Techmedia TFD-310-C | Standard IBM compatible drive. Usual setting is DC on 34. Others not used.
|
| Mitsumi D353M3D | Configured by factory. We have seen the following settings. Note that HO2 is inverted from the Teac.
|
| Mitsumi D359T5 | Configured by factory.
|
| Mitsumi D359T6 | Configured by factory.
|
| Mitsumi D359T3 | Configurable jumper system. Please see the TEAC 235 description. |
| YE-DATA YD-702D-6539D |
Slightly configurable jumper system. Usual settings are RDY on 34, and DC on 2. See the TEAC 235 for more jumpers.
|
| YE-DATA YD-686C-1506C |
Configured by factory.
|
| Panasonic JU-257-A135P |
Slighly configurable system.
|
| NEC FD1231-T | Configured by factory.
|
(C) 2009-2018 PLR Electronics