ASROCK H81M-ITX Handbuch Seite 22

2.4 Expansion Slots (PCI and PCI Express Slots)
There is 1 PCI Express slot on this motherboard.
Before installing an expansion card, please make sure that the power supply is switched off
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.
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