Use CTRL+F to check if your memory is on this list

If you already own a DDR4 stick but are unsure about it's serial number then you can use CPU-Z to help you identify it (in the spd tab)!

RAM serial number
F4-3200C14-8GFX
CMK16GX4M2A2666C16
BLT8G4D30AETA.K16F
KHX3200C16D4/8GX
CMK16GX4M2B3000C15