This is good news! I have 2x16GB sticks waiting for the arrival of an Inspiron 5378, which also supposedly has two ram slots. And the 5378 service manual has the same verbiage about supporting up to 16GB SODIMMs. But the Dell website is pretty cagey, and suggests the machine only supports up to 16GB RAM. But if 32GB works in the 7378, I'm expecting it will also work in the 5378.