USB Emulator for Brother:

BAS 310, BAS 311, BAS 304, BAS 326, BAS 340, BAS 341

BAS 760, BAS 752, BAS 753, BAS 754, BAS 755

BAS 304, BAS 311A, BAS 326, BAS 340A, BAS 341A

TC112, TC118

Youtube Video:

USB Emulator: https://youtu.be/hrImnRa9uBA

How to use PS-300B with emulator: https://youtu.be/zAVt6_J4Tjo

How to copy floppy to USB: https://youtu.be/Owhchi6XgbU