ASROCK A520M-HDVP/DASH Handbuch Seite 24

2.4 Expansion Slots (PCI and PCI Express Slots)
There are 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 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.
PCI slot:
The PCI1 slot is used to install expansion cards that have 32-bit PCI interface.
PCIe slots:
PCIE1 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE3 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
For a better thermal environment, please connect a chassis fan to the motherboard's
chassis fan connector (CHA_FAN1/WP or CHA_FAN2) when using multiple graph-
ics cards.
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