In Tribble there's 2 glowing consoles near the vendor in the lower shipyard (Fed side). One console gives the Borg set and the other gives the Aegis set for testing. I'm not sure where it's at on the Klink side, though. Probably around the same shipyard vendor, though.
I have no 3 times 3,5 hours to play that damned missions again. They are too heavy for me, not fun at all.
(Terradome is the same, if Cryptic is planning something 8472 item in the future.)
So I 'd like to buy all items at exchange. By the way, somebody knows, its are sellable at all?
So, if somebody like to sell them, send me a message.