I have for sale, in good condition, a Sony data cartridge. These are usable on Sony machines with internal firmware (HB-55/75/101/201/F5/F9). They are identical to the Yamaha UDC-01 cartridges and can be used in Yamaha software for saving/loading as well. The price is €20.
If you are interested please send me an e-mail. The address is on my profile page.
