Yorkville LP-DMX3/5 - Manual (Page 5)

Put the other end of the cable through the knockout hole and connect it to the
P3 connector on the LP-DMX3/LP-DMX5.
Turn the LP-DMX3/LP-DMX5 over and carefully guide it into the knockout
hole. Be sure not to pinch the 4-wire cable.
Use the four screws removed earlier to secure the LP-DMX3/LP-DMX5 to
the LP-LED4. Dress the 4-wire cable so that it won’t be pinched or interfere
with the stand adapter, then replace the bottom cover. Turn the LP-LED4
right-side-up. If the stand adapter had a locking screw, replace it.