RJ50

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The 10P10C modular connector type is a type of electrical connector.

This connector type is frequently called RJ50, probably due to the same terminology evolution that led its 8P8C cousin to be best (though incorrectly) known as RJ45. Used correctly, however, RJ50 refers to a specific telephone wiring standard (registered jack) that is just one of the many uses of 10P10C connectors.

A common use of 10P10C is Digi International Digiboard serial connections. It is one of the myriad of RS-232 and RS-485 connectors. See pin assignment at RS232.