A guide to keep the extruder cable bundle out of the way. The design aims to avoid any sharp flexing points by guiding the cable in the direction that it naturally sits.
The 2020 bracket clamps to the frame near the power supply, and the cable clip attaches to the top of the extruder. You may need a couple of slightly longer (~12mm I think) m3 screws. The cable is then held in place with a few zip ties.