Morrowind upgrade

dim4uk90eb17_ESO

I have a Steam version of TESO base game. Can I redeem a retail non-steam Morrowind Upgrade code on elderscrollsonline.com to play this addon?

Taleof2Cities

Can you be more specific?

Is it a physical retail copy of Morrowind?

dim4uk90eb17_ESO

There is online store that sells keys (no physical copy). And this key must be activated on account.elderscrollsonline.com instead of Steam. Will it work with my Steam version of the base game?