I'm moving my system to another case soon (swapping with my desktop PC for better airflow).

One of my three drives will go in an empty 5,25 bay. I know there are several brackets on the market, but I was hoping that people who already use this could give some recommendations?

Thanks in advance!

For the past couple of years, I have been using these Orico 2.5 SSD SATA to 3.5 Hard Drive Adapter Internal Drive Bay Converters. They have worked well in my unRAID NAS boxes with external caddies. Since the adapter is the same size as a 3.5 inch drive. So, it can fit anywhere a 3.5 inch drive can.

Amazon.com: [2Packs] ORICO 2.5 SSD SATA to 3.5 Hard Drive Adapter Internal Drive Bay Converter Mounting Bracket Caddy Tray for 7 / 9.5 / 12.5mm 2.5 inch HDD / SSD with SATA III Interface(1125SS-2) : Electronics

EDIT: Sorry I misread the title. For a 5.25" to 3.5" bay adapter, I use these Syba SY-MRA55006 5.25" Bay Tray Less Mobile Rack for 3.5" and 2.5" drives. It turns the 5.25" drive bay into a bay that holds a 3.5" drive as well as a 2.5" drive. Where the drives can easily be installed and removed without using any screws.

Amazon.com: Syba SY-MRA55006 5.25" Bay Tray Less Mobile Rack for 3.5" and 2.5" Sata III HDD with Extra 2 Port USB 3.0, Black/White : Musical Instruments

I think they also make one that just takes a 3.5" drive? Or, it could have been Icy Dock? My first three unRAIDs use those. But, I bought those over a dozen years ago. So, I'm not entirely sure if those were from Syba.

EDIT: I found what I bought back then. It was a StarTech 3.5in SATA Trayless Mobile Rack for 5.25in, TAA (HSB100SATBK) Internal SATA backplane enclosure, Hot swap, Holds one 3.5in SATA drive, Front-accessible, Lockable drive bay.

I have used those for many years without any issues.

Amazon.com: StarTech 3.5in SATA Trayless Mobile Rack for 5.25in, TAA (HSB100SATBK) | Internal SATA backplane enclosure, Hot swap, Holds one 3.5in SATA drive, Front-accessible, Lockable drive bay : Electronics

I liked them because the Sata and power connector was just a pass though adapter. Some of the other ones I looked at had a circuit board attached that used power. Which could have been a failure point. But, the pass-through option was just a passive connection to get to the external connector.

Edited Wednesday at 08:24 PM2 days by aaronwt
additional info added

Thanks a lot for your reply, @aaronwt . Exactly the info I was looking for! They look good indeed.