Synology 12 Bay NAS RackStation RS18017xs+ (Diskless) Port RJ-45: 2 x 10GbE RJ45 (10GBase-T) 4 x 1GbE RJ45 Port USB: 2 x USB3.0 HDD Interface: 12 x 3.5/2.5 SAS/SATA HDD/SSD Port Others: 1 x Expansion port Form Factor: 2U Processor: Intel Xeon D-1531 6-core 2.2 GHz, burst up to 2.7 GHz Default/ Max. Memory: 16 GB DDR4-2133 ECC RDIMM, expandable up to 128GB RAID: Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10