I have need for a 5 volt supply and have a few “dead” ATX supplies kicking around. In looking for breakout boards to make things easy in the future, I noticed something very sad:
You can buy a kit of parts and solder everything in place for $22usd SparkFun Benchtop Power Board Kit - KIT-12867 - SparkFun Electronics
Or you can buy a completed board from various offshore places for under $10usd https://www.amazon.com/KNACRO-Benchtop-Computer-Breakout-Adapter/dp/B07FKN19YH/
I’d still probably buy the Sparkfun one, those people have been good to me for a few years.