This is a 40x40 mm fan bracket for the Dell H200 HBA. It hooks around the top of the card and screws into a hole on the bottom. It isn't great, but it works better than zip ties.
Hardware
5 M3x4mm heat-set inserts
4 M3x22mm or 12mm screws depending on your fan thickness
1 M3x6mm screw, there is some space for a longer screw but don't go crazy