ASRock H77M-ITX - Manual (Page 27)

27
ASRock H77M-ITX Motherboard
English
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
3-Pin Fan Installation
Pin 1-3 Connected
ATX Power Connector Please connect an ATX power
(24-pin ATXPWR1) supply to this connector.
(see p.2, No. 9)
20-Pin ATX Power Supply Installation
Though this motherboard provides 24-pin ATX power connector, it can still work
if you adopt a traditional 20-pin ATX power supply. To use the 20-pin ATX power
supply, please plug your power supply along with Pin 1 and Pin 13.
ATX 12V Power Connector Please connect an ATX 12V
(4-pin ATX12V1)
power supply to this connector.
(see p.2, No. 19)
24 13
12 1
24 13
12 1