Dave this all depends on your sound engine - in this case the Yammie?

Does it have a USB b port? That is the one that looks like a fat "D" , and do Yammie provide USB midi drivers? If the answer is yes to both, then no problems using the USB as the midi interface

Connect your USB cable from the yammie to the PC, select the Yamaha USB Midi as the output in vA, select the Yamaha mode and off you go

Dan has done a pretty good job in getting Yamaha styles to play correctly. AFAIK, you can store all your Yammie styles onto the vA usb thumb drive...and load and play!

There are a few Yammie PSR710 styles already in the styles folder...but you would want to add your total collection I would assume?

I say afaik, as I use mostly Roland styles with vA.

Dennis