Expansion Slots (Pci Express Slots) - ASROCK H81M-HG4 User Manual

2.4 Expansion Slots (PCI Express Slots)

here are 2 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.
PCIe slots:
PCIE1 (PCIe 2.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE2 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width graphics cards.
H81M-HG4/H81M-DG4/H81M-VG4
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