Atx Power Connector; Atx 12V Power Connector; Serial Port Header - ASROCK A55M-VS User Manual

ATX Power Connector

(24-pin ATXPWR1)
(see p.2 No. 7)
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

(4-pin ATX12V1)
(see p.2, No. 1)

Serial port Header

(9-pin COM1)
(see p.2 No.21)
24
12 24
1 13
20-Pin ATX Power Supply Installation
ASRock A55M-VS Motherboard
Please connect an ATX power
supply to this connector.
12
1
Please connect an ATX 12V
power supply to this connector.
This COM1 header supports a
serial port module.
24
13