I just recently purchased a ASUS ROG GL702VS with an 1tb HDD 5,400rmp only (Shocking I know). I plan to upgrade this immediately and was looking at the manual to see what I was looking at for upgrade options. It shows that there are two M.2 slots and a SATA slot (HDD in place). The manual states "The M.2 2280 slot 1 supports SATA SSD while slot 2 supports both PCIe (NVMe) SSD and SATA SSD." I just bought a Samsung 960 Pro 512GB M.2 PCIe (NVMe) SSD for the Slot 2 (arriving tomorrow). Is the M.2 2280 the standard SSD but in M.2 form? I'm looking at a Samsung 850 EVO 1tb M.2 Sata 3 with description and title saying "M.2 NGFF PCIe Gen 3x4 NVMe SSD (2280)" were as some just state it as "M.2 SATA III Internal SSD." Which is it? I just want to know if I can put this SSD on the M.2 Slot 1. Any incite would be appreciated thanks!