Despite their similar-sounding names, RGB and A-RGB are two completely different lighting standards that cannot be connected to each other without further consideration.
RGB LEDs are powered by an analog 12V signal via a 4-pin connector:
The lighting options with “standard” RGB are limited. While the LEDs can be dimmed, only one color and brightness level can be output at a time.
A-RGB, on the other hand, is powered by a digital 5V signal via a 3-pin connector:
The lighting options with A-RGB are significantly more extensive than those with RGB. For example, different LEDs in an assembly (e.g., fans or LED strips) can light up in different colors simultaneously and thereby create patterns or various stylish effects, such as rainbows and color flashes.
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