How do you power 3.5" HHDs on a motherboard with DC input power?

I saw the new motherboards coming out with the N100 processor and I think it would make a great little NAS system.

This one has 2x SATA connectors but then it hit me, if the mobo doesn't have a 24-pin connector, how do you power the Sata drives? So far I've only built PCs with a regular PSU so I never wondered.

I think it might be a stupid question :)

This is the mobo https://www.asrock.com/mb/Intel/N100DC-ITX/index.asp#Overview