Asus P2-P5945GC - Manual (Page 27)

2-11 ASUS P1/P2-P5945GC
2.6 Expansion slots
This motherboard provides two PCI expansion slots, which locate on the PCI
raiser card that is connected to its slot on the motherboard.
2.6.1 PCI slots
The PCI slots support cards such as a LAN card, SCSI card, USB card,
another cards that comply with PCI specifications.
2.6.2 Expansion card installation
Before installing an expansion card, read the documentation that came
with it and make the necessary hardware settings for the card.
Make sure to unplug the power cord before adding or removing
expansion cards. Failure to do so may cause you physical injury and
damage motherboard components.
1. Lift the PCI riser card assembly to remove.
The length of the PCI card should be less than 150mm on the system.