For sale are 10 Severe Weather Joist Post Mount Bracket (Item #7007Model #BKT-POST-JM-4-SW). I purchased them for my deck projet, but didn't use them.
The following is what I got from Lowes web site about these post brackets:
Attaches the Severe Weather Railing Composite Post (#6914) directly to the deck joist in a line or corner application
Made of heavy gauge steel and creates a solid anchorage for the Severe Weather Composite Post (#6914)
Use for a line or corner application