I take it back. There is support. There is firmware. I stripped the NAS down to the main external casing and the main circuit board. What I found was the following:
STORLINK SL 3316
Jackpot. A bit of googling and 2 minutes later...
So now I know the name of the device.
Then more googling:
So now I know the specs of the device.
Then, on the same site, I found the GPL:
and also a link to a new firmware release from the company.