A card socket is a mechanical and electrical interface device designed for inserting, securing, and connecting electronic cards such as memory cards, SIM cards, smart cards, and others. Its core function is to provide physical support, electrical connections, and protective mechanisms for electronic cards.

Common card socket include: SD card socket, SIM card socket, TF card socket, and IC card socket.By linking assorted forms of digital equipment, the SD memory card stores digital files without requiring a computer.TF card sockets are available in different structural sizes and designs including Push-Push, Push-Pull, Pedal-Lift, Lock-card and Reverse Types.

Card sockets are widely used in devices like mobile phones, computers, cameras, POS terminals, and access control systems, supporting functions such as storage expansion, communication authentication, and secure encryption.