ThinkSystem ST45 V3 Tower - 7DH5, Tower convertible to rack 4U, AMD EPYC 4244P 3.80 GHz, 6-core, 32 MB cache, 65W, 16GB UDIMM DDR5-5200; 2x DIMM sockets supporting Lenovo TruDDR5 DIMMs at 5200 MHz. Support ECC UDIMMs. Max: Up to 64 GB using 2x 32 GB UDIMMs., 2x onboard SATA ports supporting AHCI (JBOD) mode (for 2x 3.5-inch drives). Supported RAID levels RAID levels: 0, 1 for Windows Server only., 2x 2TB SATA HDD; 2x 3.5" non-hot swap (NHS) drive bays. The server can be configured with HDDs or SSDs. The server also supports 2x NVMe M.2 drive installed in a socket on the system board as a boot drive., One integrated Gigabit Ethernet 1000BASE-T port (RJ-45), Realtek RTL8111FP., No DVD, One fixed 500W Platinum power supply: Energy Star and ErP Lot 9 compliant, OS not included