What is a PCI Slot?

there are wlan or lan cards, you can use it for extra drives or usb ports and such things if you see the need to somehow use it and have the

Card capacity and size Mac Pro has seven PCIe slots that accept many different types of PCIe cards: Slot 1: gen 4, up to x16

pcieslot there are wlan or lan cards, you can use it for extra drives or usb ports and such things if you see the need to somehow use it and have the

pcieslot So, there is no singular PCI Express slot There are actually four sizes : PCI Express x1, PCI Express x4, PCI Express x8, and PCI Express x16