ASROCK 4CORE1600-GLAN-M - V1.0 User Manual page 23

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.
ATX Power Connector
(24-pin ATXPWR1)
(see p.10, No. 29)
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.
20-Pin ATX Power Supply Installation
ATX 12V Connector
(4-pin ATX12V1)
(see p.10 No. 3)
Pin 1-3 Connected
Please connect an ATX power
24 13 supply to this connector.
12 1
Please connect an ATX 12V
power supply to this connector.
2 3 2 3 2 3
2 3 2 3
3-Pin Fan Installation
24 13
12 1