It has a set of screws for HDD, one for SSD, it also has orange and black pads to put according to the case you have, it also works for old cases with an asterisk. The one I received had a bent angle on one side that touches the back of the case where everything is secured, and one screw didn't fit well, but the other two worked fine. It is possible that it is designed for newer cases with a different design or it was defective, I can't know why BQ advertises them as compatible with older cases

Very good tray. Of course, it should not be sold separately but should be included in whichever box you purchase. It is also unacceptable that their white boxes come with (one or two) white trays, but the rest that you buy if you need them are only black.