Expansion Slots (Pci Express Slots) - ASROCK B450D4U-V1L User Manual

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2.6 Expansion Slots (PCI Express Slots)

There are 3 PCI Express slots on this motherboard.
PCIE slot:
PCIE4 (PCIE 3.0 x16 slot, from CPU) is used for PCI Express x8 lane width cards.
only)
PCIE5 (PCIE 3.0 x8 slot, from CPU) is used for PCI Express x4 lane width cards.
PCIE6 (PCIE 3.0 x16 slot, from CPU) is used for PCI Express x16 lane width cards.
Slot
PCIE6
PCIE5
PCIE4
(X470D4U only)
PCIe Slot Configurations
For Matisse CPU users, if you want to use the PCIE4 slot, please first switch the PCIe x16
slot to [2x8] in the BIOS settings:
Go to "Advanced" > "AMD PBS" > "PCIe x16/2x8/4x4 Switch" > select "[2x8]" and press
F10 to save and exit. For more information, please see Chapter 3.3.9 AMD PBS.
Installing an expansion card
Step 1.
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.
Step 2.
Remove the system unit cover (if your motherboard is already installed
in a chassis).
Step 3.
Remove the bracket facing the slot that you intend to use. Keep the
screws for later use.
24
Generation
Mechanical
3.0
3.0
3.0
(X470D4U only)
Single PCIE Card
Two PCIE Cards
Electrical
x16
x16
x8
x4
x16
x8
PCIE4
PCIE6
N/A
x8
(X470D4U
Source
CPU
CPU
CPU
x16
x8

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