on the mb check that it has the bios needed to post your ib cpu. the last 4 digits on the ser# label show the bios rev.
any atx 2.0x power supply going to have the standard 24 pin atx power plug needed for atx motherboards.
there may also be on the 500w and larger power supplys cables for gpus. these will be 6 pin plugs with two pin cable hanging to make a 6 plus 2 cable. the only other plug that needed on a atx motherboard is the pci power connector. it be a white or other color connector near the cpu or on the edge of the mb. it be 4 or eight pins. most my will have a cable that take two 4 pin connectors together to make one eight pin. or it have the eight pin connector and a snap point to break the cable in 1/2.