“I'm looking on https://us.msi.com/Laptop/GS66-Stealth-10SX/Specification at the GS66 Stealth 10SF-005 that best buy sells. It states that this unit comes with 16GB (16G*1) DDR4 2666MHz. So does this come with one card at 16GB or 2 at 8GB. So I can upgrade”