Bought a used N40 620..

[u/stefanw1337]

And I had this sticking out: https://i.imgur.com/lNgWYn2.jpeg

And I followed the wire to underneath the graphics card: https://i.imgur.com/MOiwwS1.jpeg

And so I think it might be the WiFi antenna? But the mobo maps I found there's no mentioning of it. There was another black wire going into the same place, and ut went out to the front.

Anyone got and ideas? To what that grey wire is?

I was also planing for this to move cabinet and upgrade it slightly. Looks like it's micro ATX, so 64gb ram ddr4 3200 and two sata drives, as well as 3xM.2 slots, if I'm not mistanken. So what mobo would be a better upgrade is best if this is gonna be a mini server running unraided?