The Lumilum LUM-B34XTS-DMX Controller features 2 Mini XLR DMX connections. This cable is designed for use when you have your own wires ran and need to make an XLR connection to the B34XTS Controller
The LUM-B34XTS-MXL is used for the DMX Input on the B34XTS.
The LUM-B34XTS-FXL is used for hoking up to the output of the B34XTS. An example would be if you are looping B34XTS units at far distances and ran your own DMX cable.