MSI X570-A PRO User Manual - Page 29

PCI_E1~5: PCIe Expansion Slots Slots 3rd Gen AMD Ryzen™ 2nd Gen AMD Ryzen™ Ryzen™ with Radeon™ Vega Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics PCI_E1 PCIe 4.0 x16 PCIe 3.0 x16 PCIe 3.0 x8 PCI_E2 PCIe 3.0 x1 PCIe 3.0 x1 PCIe 3.0 x1 PCI_E3 PCIe 4.0 x4 PCIe 3.0 x4 PCIe 3.0 x4 PCI_E4 PCIe 3.0 x1 PCIe 3.0 x1 PCIe 3.0 x1 PCI_E5 PCIe 3.0 x1 PCIe 3.0 x1 PCIe 3.0 x1 Important y If you install a large and heavy graphics card, you need to use a tool such as MSI Gaming Series Graphics Card Bolster to support its weight to prevent deformation of the slot. y For a single PCIe x16 expansion card installation with optimum performance, using the PCI_E1 slot is recommended. y When adding or removing expansion cards, always turn off the power supply and unplug the power supply power cable from the power outlet. Read the expansion card's documentation to check for any necessary additional hardware or software changes. PCIe bandwidth table Slot Single 2-Way PCI_E1 (CPU) @4.0 x16* or @3.0 x16** or @3.0 x8*** @4.0 x16* or @3.0 x16** or @3.0 x8*** PCI_E2 (PCH) 3.0 x1 ― 3.0 x1 ― PCI_E3 (PCH) PCI_E4 (PCH) 4.0 x4* or 3.0 x4**/*** ― 3.0 x1 @4.0 x4* or @3.0 x4**/*** ― 3.0 x1 PCI_E5 (PCH) 3.0 x1 3.0 x1 (─: unavailable, @: graphics card, *: for 3rd Gen AMD Ryzen™, **: for 2nd Gen AMD Ryzen™, ***: for Ryzen™ with Radeon™ Vega Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics) Overview of Components 29