The new posts are on the side and held in place by two .5"x7" thru bolts(current code standards. The knee bracing is another code requirement.
Again, nice looking railing system, just flawed at the posts.
To make things worse the sellers just had the railing system installed and the deck stained.
Notice two posts at the corner...a code requirement but also a smart requirement because it makes all the difference in the world.