ASROCK B150M Pro4/D3 Manual Del Usuario página 19

2.4 Expansion Slots (PCI and PCI Express Slots)
here is 1 PCI slot and 3 PCI Express slots on the motherboard.
Before installing an expansion card, please make sure that the power supply is switched of
or the power cord is unplugged. Please read the documentation of the expansion card and
make necessary hardware settings for the card before you start the installation.
PCI slot:
he PCI1 is used to install expansion cards that have 32-bit PCI interface.
PCIe slots:
PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE2 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.
B150M Pro4/D3
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