LED Cable
The LED extension cable (specifically called a 3-pin JST Cable) lets you place MAINFRAME-B and the LED run farther apart without twisting the board or the strip.

LED extension cable.
Notes
- The cable is keyed and only plugs in one direction.
- Long runs can introduce signal issues; ideally keep the total length below 5 meters.
- If you see flicker or glitches, shorten the cable, reduce brightness or improve power.