For portable devices such as LED or automated fixtures, typically a receiver will use a five pin XLR type connector, with a male connector used for the DMX input to the device, and a female connector ...For portable devices such as LED or automated fixtures, typically a receiver will use a five pin XLR type connector, with a male connector used for the DMX input to the device, and a female connector used for the DMX thru connector. If you have a DMX device that still misbehaves even when connected directly to a known good DMX output, try reducing the DMX speed of the DMX output to see if the problem improves.