Hi,

no usb or serial ports, this product is quite old.

You can download the manual at
\\Korgsrv\Archivio\Pa80 Website\pacom2004\pa_root\en\extra\korgstory_i30.html
and then search for Disk -> Save selecting
as target the Fd. It seems not so difficult, the disk interface is similar to that of Triton, Pa1X and the like.

Cheers.