The DS425+ delivers powerful functionality in a compact 4-bay, desktopfriendly design. Built-in 2.5GbE networking provides excellent network speeds out of the box. Powered by Synology DiskStation Manager (DSM), the DS425+ serves as a versatile all-in-one solution for data sharing, synchronization, backup, and surveillance.3-year hardware warranty, extendable to 5 years with EW201 ( additional purchase)