http://www.worldofspectrum.org/forums/s ... 682&page=3
One remark : as often, some games/software will probably don't work correctly on the external drive.1024MAK wrote: The settings for these jumpers do look the same between the SDCard HxC Floppy Emulator User Manual and Lotharek's cased version, it is just that he has used a 90 degree angled pin-header.
Having just looked at the copy of the Spectrum +3 service manual that I have (which has a schematic circuit diagram), the pin-out from Guesser and the SDCard HxC Floppy Emulator User Manual, my conclusion is that you should fit only one jumper: ID1 drive A.
If you fit a jumper to ID3, is is actually the Motor On (MO) line and the HxC will respond whenever the Spectrum tries to access any disk drive.
According to the pin-out from Guesser, the only ID line available on the external floppy connector is ID1.