Clearance - 2.5inch SSD HDD to 3.5" Metal Mounting Adapter Bracket Dock Hard Drive Holder

While I can "put a pi in it", Pandoras are much better (to me anyway) when you don't care about customization and just want to power it on and play.
I've been looking for a family edition vertical Pandora's Box for a while, so glad DIY offered these. The smaller board fit perfectly in my countercade.

It even detected the USB converter I had, so no harness was needed.

I've noticed some of the games need button combinations to start since the Pandora Saga doesn't really know what a 1p button is, Galaga uses (Start+A) for example. It even flashes it on the screen when the game boots.
While I've mostly used the vertical mode and the games run fine, I've played a few horizontal games and they seem to run good as well.
The startup video is great too! It is simple, but really brings the room together. :)

The only suggestion I would make is to backup the SD card to an img before you do anything. Not a ding against DIY's offering, just SD cards in general.

I've been ordering from diyretroarcade for years, many communications through messenger, and always have a top notch experience.