Modular connectors and RJ connectors includes two similar, yet distinct styles of connectors. Electrical connectors are said to be modular when they are made of "plug-in units" which can be added together to make the system larger, improve the capabilities, or expand its size. Registered Jack (RJ) is a telephone and data jack application specific connector registered with the FCC. Numbered connectors, like RJ-11 and RJ-45, are widely used in the telecommunications industry. A precise way to identify a modular connector is to specify the number of positions and number of conductors. For example: "8-position, 8-conductor jack" or "6-position, 4-conductor jack".
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Audio connectors are used to affix cables to other audio equipment, providing electronic signal transference and grounding protection.
Circular connectors are multi-pin connectors primarily used for external interfacing.
D-subminiature or D-sub connectors are sturdy electrical connectors with a mating face shaped like the letter D. They provide polarization because male and female connectors can fit together in only one way.
DIN connectors are high frequency, multi-pin, electrical connectors that meet standards established by Deutsches Institut für Normung (DIN), a German national organization for standardization. The ends of DIN connectors are round, notched, and protected by a metal skirt to ensure that pins line up correctly.
Electrical connectors are devices that join electrical circuits together. Male connectors plug into receptacles, jacks, and outlets. Female connectors contain sockets to receive other devices.
Fibre Channel Connectors
Fibre Channel connectors are high-speed connectors used in Fibre Channel systems.
RF and Microwave Connectors
RF and microwave connectors are used to connect the ends of cables in systems that operate in the radio frequency (RF) or microwave spectrum. They include threaded or bayonet-style couplings that snap, screw, or push into place.