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Technical FAQ

Which slot of Mac Pro 2019 is recommended to be installed with Host adapter card of NA255A?

Slot 3 is a PCIe ×16 slot which is recommended for NA255A in support of the external GPUs.

Slot 6 and Slot 7 are PCIe ×8 slots which are recommended for the NS780S-G3.

                     
mac pro 2019 recommended external pcie x8 slot

Mac Pro 2019 has eight PCIe x16* sized slots that accept many different types of PCIe cards:

  • Slot 1: up to x16 lanes (double-wide)
  • Slot 2: up to x8 lanes (double-wide)
  • Slot 3: up to x16 lanes (double-wide) [recommended for NA255A for external GPUs]
  • Slot 4: up to x16 lanes (double-wide)
  • Slot 5: up to x16 lanes (single-wide)
  • Slot 6: up to x8 lanes (single-wide) [recommended for NS780S-G3]
  • Slot 7: up to x8 lanes (single-wide) [recommended for NS780S-G3]
  • Slot 8: up to x4 lanes (half-length)

For more information about slot layout of Mac Pro 2019, please visit:
https://support.apple.com/en-us/HT210104