[ijustlovemath]

"off the shelf" in aerospace means that you can buy it from an aerospace manufacturer, and don't have to build it in house. There's considerably more engineering behind these products than the equivalent consumer electronics

[Kye]

My understanding was they used actual consumer hardware for it. This was a big thing in the news when it landed.

edit: from another comment: https://news.ycombinator.com/item?id=39081718

It looks like it's just a couple of (important) components that can handle the quirks of not being radiation-hardened, but it's still significant.