I have a set of Yamaha yst-ms55d speakers I guess I need to go fr a sound card optical out to a (square )USB female input jack on the Yamaha speakers? I did this before( i think, can't recall I had a stroke ! sorry !) and awesome sound 20 yrs ago now sound blaster has no fix and says the old card (which I lost is NLA )it had a front panel too and anyway it is not compatible w/ win 10 ? Do I need an adaptor? which new sound card should I buy? want to go digital to the square USB input female jack on the powered Yamaha speakers thx a lot