LIGWI Ultra-Thin Power Supply / LED Driver: The large black block at the top converts standard AC input to a stable 48V DC output to power the entire track system safely. Straight 'I' Jointer Conductive Module: The two-piece articulated link in the middle connects two separate track rails end-to-end to transmit electrical signals across sections. Trimless Recessed 90° Corner Rail (L-Jointer): The chunkier, right-angle profile piece serves as a physical 90-degree corner transition for plasterboard or drywall ceilings. Track-to-Track Input Power Connector: The smallest component at the bottom handles the initial feed wire link into the rail system.