pcie slot ✓ What is a PCIe SSD?

Yes, PCIe 5 slots are backward compatible which means you can insert older-generation peripherals into the new slot However, the connection will run at thepcie slot,Learn about the PCIe slots on your Mac Pro and how to install additional cards

The PCIe x1 slot is the smallest PCI Express slot and has the lowest throughput compared to larger PCIe slots such as the PCIe x16 slot pcie slot,For example, if you connect a PCIe expansion card to a PCIe slot, the card will perform to the PCIe specs PCIe Gen 4 offers

pcie slot,SuperSpeed Storage：PCIe x4 Connector; EZ-Latch：PCIe x16 Slot with Quick Release Design; Fast Networks：GbE LAN; Extended Connectivity：DP, HDMI; Smart