HPE Server made for Small Businesses, the MicroServer Gen10 Plus Tower Server with FreeNAS Operating System! Intel Xeon E-2224 Quad-Core 3.4GH z 8MB CPU, Up To 4.6GH z Turbo 32GB (2 x 16GB) DDR4 PC4-21300 2666MHz Unbuffered Memory 8TB (4 x 2TB) 7.2K 6Gb/s SATA 3.5" HDDs in RAID Hard drives and memory upgrades included separately NOT installed, installation required.