here is "nalbantov" (hehe) at $135!!!!
https://www.ebay.com/itm/Nalbantov-USB- ... Sw~CFY5Quu
now here is an equivalent gotek
look at it its the same drive without his silly sticker for $15
https://www.ebay.com/sch/i.html?_from=R ... y&_sacat=0
The EX5 features a unique Extended Synthesis system which incorporates a number of advanced tone generator technologies. AWM2, AN, FDSP and VL. The EX5 is one of the best keyboard Yamaha ever produced.