The H81M-K motherboard requires a 24-pin ATX power connector and an 8-pin EPS power connector. Connect the power cables to the corresponding connectors on the motherboard.
The H81M-K motherboard has two DDR3 DIMM slots, supporting up to 16GB of memory at 1600MHz. To install the RAM, align the notches on the DIMM with the tabs on the slot. Gently push the DIMM into the slot until it clicks into place. Secure the DIMM with the clips. asus h81m-k motherboard setup