[4 Plug Possum Link 3.1]

another photo

[4 Plug Possum Link 3.1]

I have another 4 plug Possum Link that doesn't have a sticker on the chip like they usually do, the only meaningful numbers I can find are on the back of the board are 1996 Subaru V3.1. Can you confirm any of the specs from the V3.1, would it be laptop tuneable, and what sort of age would it be?

[Subaru G1 4 plug link]

I have purchased a link for my 1992 legacy gt and it has wrxroadr 775 written on the chip, is this suitable to run in my legacy and can you confirm if it is laptop tuneable? Thanks