The pictures you sent are both LEDs with built-in drivers on both sides. The exterior of the guide track spotlight is integrated with the driver, but the position is staggered. Does not affect the use. The first one is COB, which is the latest LED light source at present. The picture below shows a high-power LED light source. 4000K light is the most natural light color. It's ok for clothing stores, but it's a bit difficult to find the LED color temperature of 4000 K.