Nalbantov USB Floppy Disk Drive Emulator N-Drive 100 for Yamaha Tyros 1; PSR 340/350/450/540/550/630/640/730/740/1000/1100/2000/2100 : Musical Instruments - Amazon.com
Music Projects - Installing a Hard Drive in Your Tyros2
40GB Hard Drive for Yamaha Tyros loaded with styles, midi, multipad and registration files | Reverb