A:Answer The LG gram 17” Ultra-Lightweight Laptop with Intel® Core™ i7 processor, Model # 17Z990-R.AAS8U1 comes with 16GB DDR4 2400MHz and it has two slots for RAM with one slot being 'On Board' (i.e soldered to the motherboard) and other slot has *GB that you can exchange with 16GB for a total of 24GB. The specifications on our product page for the LG gram 17” Ultra-Lightweight Laptop with Intel® Core™ i7 processor list the hard drive as M.2 2280 SSD. What the number 2280 means is that the slot supports 22mm wide and 80mm long M.2 devices. We list the hard drive as an M.2 2280 SSD (Solid State Drive) and the interface as SATA3 for the 17Z990-R.AAS8U1, but the M.2 interface is designed to use either Legacy SATA mode or the newer PCI-Express (PCIe) modes and the drive will pick which one to use. The slots in the laptop are labeled as NVMe x 4 and NVMe x 2 so if an NVMe SSD is connected to the slots, NVMe command will be used. If you have additional questions regarding our laptop, give our computer specialists a call at 800-243-0000. ^CP