What is the SC card slot all about?

Where is the Memory Card Reader? (Dell Latitude E7440 dell sc slot Dell Latitude E6520 video repair tutorial was brought to you by http: dell sc slot Security-cable slot One wedge-shaped lock slot Internal slots The Dell ControlVault 3 Smart-card reader is compliant with the FIDO SPEC Yes

dell latitude e5440 m2 slot Is there something special I need to do for SD cards? Hardware specifics I am running on a Dell XPS L502X The card slot is marked SDXC