Biostar H55A Setup Manual page 13

ATXPWR2: ATX Power Source Connector
Connecting this connector provides +12V to CPU power circuit.
Note:
Before you power on the system, please make sure that both ATXPWR1 and ATXPWR2
connectors have been plugged-in.
PCI1/PCI2: Peripheral Component Interconnect Slots
This motherboard is equipped with 2 standard PCI slots. PCI stands for
Peripheral Component Interconnect, and it is a bus standard for expansion
cards. This PCI slot is designated as 32 bits.
1 4
Pin Assignment
2 3
1 +12V
2 +12V
3 Ground
4 Ground
PCI1
P CI 2
H55A+
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