Synology DS1621xs+ 6 Bay NAS Intel® Xeon® D-1527 4-core 2.2GHz 8 GB DDR4 Hot swappable 3 x USB 3.0 2x1GbE 1x10GbE 1x8-lane x8 slot 5 Yr Wty Synology DiskStation DS1621+ is a powerful 6-bay network-attached storage solution designed to store and protect critical data assets. The growing amount of unstructured data requires smarter and increasingly higher performance methods of storing, accessing, and sharing. DS1621+ is a compact desktop form-factor NAS that is beyond evolutionary, featuring over 110K, or 174% higher 4K random read IOPS1, compared to its predecessor. Designed for scalability, the DS1621+ enables you to start small, then expand as your data grows. CPU Model AMD Ryzen V1500B CPU Architecture 64-bit CPU Frequency 4-core 2.2 GHz System Memory 4 GB DDR4 ECC SODIMM Memory Module Pre-installed 4 GB (4 GB x 1) Total Memory Slots 2 Maximum Memory Capacity 32 GB (16 GB x 2) Drive Bays 6 Maximum Drive Bays with Expansion Unit 16 (DX517 x 2) M.2 Drive Slots 2 (NVMe) Compatible Drive Type* (See all supported drives) •3.5' SATA HDD•2.5' SATA HDD •2.5' SATA SSD•M.2 2280 NVMe SSD Maximum Single Volume Size* 108 TB