User Manual

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B550M-HDV

2.4 Expansion Slots (PCI Express Slots)

ere are 2 PCI Express slots on the motherboard.

PCIe slots:

PCIE1 (PCIe 4.0 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.

PCIe Slot Congurations

Before installing an expansion card, please make sure that the power supply is

switched o 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.

PCIE1 PCIE2

Ryzen Series CPUs (Matisse) Gen4x16 Gen3x1

Ryzen Series APUs (Renoir) Gen3x16 Gen3x1

For a better thermal environment, please connect a chassis fan to the motherboard’s

chassis fan connector (CHA_FAN1 or CHA_FAN2 ) when using multiple graphics cards.