As you can tell from the video, this is one of the HP models that use proprietary screws for the hard drives. You can clearly see that both the 3.5" and the 2.5" bays need screws with special heads and rubber washers that will fit into the guides of the bay.

But while the HP screws are custom made to fit this specific case, they will fit any 3.5" hard drive, including a universal 2.5"-to-3.5" bracket. So yes, a generic bracket will work.

3.5" hard drives and many parts inside computer cases use screws that follow the U.S. Unified Thread Standard (UTS). Specifically, 3.5" drives use #6-32 UNC screws.

2.5" units (and 5.25" units, incidentally) use metric M3 screws. This means that even if the screws you have might fit the guides of the 2.5" bay inside the case (and I don't know for sure that they would), they certainly wouldn't fit the M3 holes in a 2.5" drive.

Michael Piziak,

I have just looked at the video.

A universal adapter should work fine in the 3.5 inch drive bracket (top) using the original screws and washers.

Alternatively try fitting the new SSD in the lower bracket. There are no screw holes in the lower bracket.

Just use some sturdy duct tape or similar to retain the SSD in the lower bracket. It is not essential for a SSD to be screwed in.

I once had a refurbished HP desktop, direct from HP, and the SSD was secured by duct tape.

I have yet to encounter any machine that is not configured for standard size drives. To mount a 2.5" SSD in a 3.5" slot the standard adapter is all that is needed.

It may sound sloppy, but if this is a desktop which is sitting peacefully and not thrown around as it may happen with notebooks then any non-standard way to secure the drive in place will do. Just one screw will hold it in place, considering how light SSD drives are.