Dependable Performance Up to 276/224 MB/s sequential read/writethroughput supports stable data transfers Fast Networking Built-in 2.5GbE port for fast connectivity out of the box Versatile Network Storage Leverage built-in file and photo management, data protection, and surveillance solutions Capacity Expansion Add 5 extra drive bays for up to 140TB of storage with one DX525 expansion unit Extendable Product Support Backed by Synology's 3-year limited hardware warranty, extendable to 5 years in select markets