also: コネクター
noun
Refers to a physical or logical connector, typically in computing, electronics, or networking contexts.
USBコネクタを差し込んでください。
Please plug in the USB connector.
このケーブルのコネクタが壊れている。
The connector on this cable is broken.
端子 means 'terminal' (electrical contact point), often used interchangeably with コネクタ in hardware contexts, but コネクタ emphasizes the plug/socket assembly.
Loanword from English 'connector', adapted into katakana.