This is a beefy switching supply, for when you need a lot of power! It can supply 5V DC up to 10 Amps, running from 110V or 220V power.
The output connects to a 2.1mm DC plug. There's a green LED indicator lamp as well.
These will be great for people who want to power 5V LED strips or a lot of motors for a CNC project. Using a separate supply like this can be easier than trying to modify an ATX power supply as it's smaller, quieter, and has a plug on it ready to go!