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 |