I need to know if I can upgrade my RAM to dual rank type. I knew it from manual, I can upgrade it to 16Gb RAM. But my concern is about which type the motherboard can support.

My Vostro 3578 (FHD display) came with a single 4Gb DDR4 2400MHz 1Rx8 stick, can I replace with 2 pcs of 2Rx8 type? Because it's harder for me to find 8Gb stick of DDR4 2400MHz with 1Rx8 type. So my final RAM composition will be 2 pcs of 8Gb 2Rx8 DDR4 2400MHz. Will it be okay, or not? Thank you.