The item itself is RGBW -
However, the datasheet linked in the description only references RGB -
Do you have a link to the right datasheet?
I had a quick look around the other RGBW LED product datasheets and one with the filename p2757_SK6812RGBW_REV01.pdf (sorry can’t post more than 2 links as a new user) looked hopeful but the colour ordering seems to be wrong (RGBW rather than GRBW).
Thanks,
Chris