What are PCIe Slots in PC?

Useful things to put in pcie slots other than gpu? : rbuildapc slot pci e Table 2-25 PCIe slot locations for a slot type in a Power S914 server Slot type Location codes Number of slots PCIe Gen 4 x8 4 P1-C5, P1-C7, P1-C10, and P1- slot in shelf brackets In ASUS 「PCIe x16 Slots - 2」

slot animation This powerful CPU card and x16 PCI-E available to all 20 slots unleash the unprecedented performance in a very compact 19″ form factor with only 4U