The 640 Watt LED RGBW Driver It has 4 RGBW LED outputs (24V) each with 2 output connectors mounted on the rear of the rack mount driver. There are 8 sockets dedicated to powering LED strip lights on 4 independent output zones. The Type 4 has 4 indicators lamps on the rack mount front plate displaying the output status. These output status lights show the internal electronic current activity. They can also be used for programming offline.