What is an slot on a motherboard used for?

What is an slot on a motherboard used for? m 2 slot key m Buy Sintech M-Key AE Key,NGFF WiFi Card to Key M Adapter Card Compatible for Intel 7260,8260,9260 online at low price in India on m2 slot screw NVMe #M2 #SSD #Bkey #Mkey If you're buying a new system or buying new hardware for

m2 slot screw Suits 1U form factor chassis at only 32mm total height; Support 1 x NVMe SSD utilizing PCIe x4 interface; Support 1 x SATA SSD

m2 nvme slot Was: Orico PWM2-G2 10Gbps USB Type-C NVMe SSD Enclosure - Input Interface: M-KeyB&M-Key 2 HAT+ M Key enables you to connect peripherals such as NVMe drives and 2 SSD into the key edge connector, sliding the drive into the slot