Synology DiskStation DS920+ is a powerful four-bay desktop NAS that brings you a fast and smooth data management experience, as well as sequential read and write throughput of over 225 MB/s. It benefits computing-intensive applications, speeding up Synology Drive and Moments by an average 15%, and boosting Web PHP response efficiency by about 130% compared to its predecessor, making data management simple and efficient. DS920+ comes with two built-in M.2 SSD slots that support Synology SSD Cache technology, allowing you to reduce random I/O response time 20 times compared with spinning drives without occupying front drive bays. You can add five more drives with Synology DX517 for higher storage capacity..Supported RAID type: Synology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5,RAID 6, RAID 10.Input voltage: 100-240VAC, 50-60Hz.Offers users a range of backup solutions for cloud and physical, on-premises environments: Cloud Sync, Synology Drive Client, Hyper Backup, and more.3-year manufacturer limited warranty.Dimensions: 6.54"H x 7.83"W x 8.78"D.Powered by quad-core 64-bit Intel Celeron J4125 processor with 2.0GHz base/2.7GHz burst frequencies and 4 GB DDR4 non-ECC RAM expandable up to 8GB.Meets or exceeds FCC and RoHS standards.Powerful four-bay desktop NAS with two built-in M.2 SSD slots and up to 64TB storage capacity.Helps you easily manage multimedia content and share it across Windows (7 and up), macOS (10.12 and up), and Linux platforms.Connectivity interfaces: 2 x RJ-45 1GbE LAN ports, 2 x USB 3.2 Gen 1 ports, and 1 x eSATA port