is there a good way to find out what else it has?
Opening the case would probably be the easiest way. :-)
Transfering ADF's to a miggy with OS 1.3 is very difficult, allthough possible.
The PC itself can't read amiga floppies without special HW, so you have to transfer the ADF-files to the miggy via a PC-720k floppy and write it to disk from there.
The problem is that OS 1.3-2.0x can't read PC disks without special SW.
Your safest bet would probably be to find a local Amiga usergroup, and see if someone there can help you.