Upgrade RAM in one slot
I've seen that this model is upgradable to 16GB using two 8GB modules. Can it be upgraded to 8GB using just one slot, and later be upgraded to 16GB by buying another 8GB module? Can it have 2GB in one slot and 8G in the other one?
I just need 8GB, but may need more in the future (as in 3 years from now; I tend to use my computers for 5 years or more before buying a new one).
Thanks in advance for your answers