Its normal. The 'secondary' one is for second monitors plugges into the
other connection on the card. Allows you to stretch your desktop etc over
them both or have a Word file and an Excel file open on each and drag and
drop between them. HTH, Shaun.
It installs a driver for both your primary connection and the secondary in
case you want to use the other connector to a 2nd monitor (or whatever) and
run them at same time.