It says it’s a Dell 07N90W MotherboardWelcome to the forums, newcomer!
Make and model of your motherboard? If it's made by Intel, they have a number of SKU's in their portfolio. You might want to use CPU-Z to see what the motherboard tab shows/says. FYI, the sticker on the ram shown, is DDR3-1600MHz but the listing below it says 1333MHz, so either the image is wrong or the seller is lying.
IMHO, I've seen Intel boards refuse to work with high density sticks of ram.