You will use the new 26pin IDC cable: one end goes to SY77/SY99 main board and the other end goes to the adapter. The 34pin side will be connected to the 34pin IDC Floppy Drive/Emulator connector together with the 2pin 5V power connector, as it is shown in the second and third picture.

Suitable for the following models:

Yamaha SY77/SY99 synthesizers

Recommended USB Floppy Emulator: SFRM72-TU100K or Flash Floppy SW Emulator

Included:

26 to 34pin adapter + 60cm 26pin IDC cable

The USB Floppy Emulator is not included.