Summary
XLR4
XLR 4-pin
An XLR connection is a cable-end housing that has male and female counterparts with varying numbers of pin connections depending on the cable use.
A 4-pin configuration is most often used in the film and media industries to carry low voltage power supplies in the 12-24 volt DC range. As an example, Arri cameras use 4-pin for their power supplies.
Description:
An XLR connection is a cable-end housing that has male and female counterparts with varying numbers of pin connections depending on the cable use. 
A 4-pin configuration is most often used in the film and media industries to carry low voltage power supplies in the 12-24 volt DC range. As an example, Arri cameras use 4-pin for their power supplies.