The ASRock Z390 Phantom Gaming 4 was built on the latest Intel chipset on the day of this writing, the Z390. This motherboard is loaded with four DDR4 memory slots that supports up to 64GB and up to 4300 MHz speed. Two PCI Express 3.0 x16 slots, and three x1 slots. Six SATA III ports and a two M.2 slot. Supports SATA RAID. The M.2 slot supports Intel Optane for your storage, the M.2 slot support up to PCIe 3.0 x4 speeds, meaning, the data read and write are significantly faster than the SATA III drives.