Floppy Drive Emulator TO USB Converter Kit For YAMAHA PSR 8000 & 9000 Keyboard | eBay
N-Drive 1000 emulator for Yamaha PSR | USB floppy emulator Nalbantov N-Drive
Amazon.com: Floppy Disk USB Emulator N-Drive Slim for Yamaha DKC500, DKC100XG, DKC500R/RW, DKC500R XG, DKC500RWXG used in Mark II XG (also Pro; Silent) : Electronics
N-Drive 100 emulator for Yamaha Clavinova | USB floppy emulator Nalbantov N- Drive
NDriveOled119 USB Emulator Nalbantov N-Drive Extreme for Yamaha DKC50R and PPC50R (MPX70, MX22/116/500)
The USB floppy disk drive emulator in Yamaha PSR - YouTube