What is PCIe? Understanding PCIe Slots, Cards and Lanes

PCIe cards you can install in your Mac Pro pcieslot PCIe x1 slots have only one PCIe lane Despite having only one PCIe lane, PCIe x1 slots are useful for various lower-power PCIe peripheral pcieslot PCIe Gen3x16 slots Processor module 0 also supports a single PCIe Gen3 x8 slot, which is used for the default LAN adapter The other x8 connection is used

pcieslot PCIe slot mapping from compute sleds · Four-bay chassis—Each half-width compute sled is mapped to two PCIe slots · Eight-bay chassis—Each quarter-width compute