3 Expansion Options in the OptiPlex 5000 SFF
M.2 2230 Key E slot for Wi-Fi This slot lets you upgrade the wireless card, giving you better connectivity without using a PCIe slot.
One PCIe x16 slot Use this for a dedicated graphics card, capture card, or other high-bandwidth add-in card.
One PCIe x1 slot This slot supports smaller expansion cards like USB or network adapters, adding functionality without sacrificing the x16 slot.