You can even pair Wi-Fi cards and networking adapters with the M.2 slots.
M.2 Slots: This is the most modern expansion slot in play, supporting high-speed SSDs.PCIe Express: These lots are the most versatile and known for establishing high-speed connections with sound cards, graphics cards, and other peripherals.Peripheral Component Interconnect (PCI): Even though the standard vanilla PCI slot is a tad dated, it is a good starting point for connecting modems, network cards, and even sound cards.