ASRock B450M/ac R2.0 User Manual - Page 34
Expansion Slots PCI Express Slots
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2.4 Expansion Slots (PCI Express Slots) There are 2 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. PCIe slots: PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE2 (PCIe 2.0 x16 slot) is used for PCI Express x4 lane width graphics cards. PCIe Slot Configurations Ryzen Series CPUs (Matisse Ridge) PCIE1 x16 Ryzen Series CPUs (Pinnacle Ridge) x16 Ryzen Series CPUs (Summit Ridge) x16 Ryzen Series CPUs (Picasso Ridge) x8 Ryzen Series CPUs (Raven Ridge) x8 Athlon Series CPUs x4 PCIE2 x4 x4 x4 x4 x4 x4 English 28
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