i have a "B360M DS3H" mobo and a "Intel Core I5 8400" was wondering if this ram would work with this setup "Corsair CMK8GX4M2B4266C19R Vengeance LPX 8 GB (2 x 4 GB) DDR4 2666MHz C16 XMP 2.0 High "
Download the Qualified Vendor List for that MB here: download.gigabyte.eu/FileList/Memory/mb_memory_ga-b250m-ds3h.pdf
You can look up that memory on the list. Alternative: go to the Corsair site, tell it you motherboard, and it will give you a list of kits that will work.
one person from my mobo support was saying it don't support 2666mhz ram and then one was saying i does support it so that just makes me confused on what Ram i need