Synology DS425+ delivers powerful functionality in a compact 4-bay, desktop friendly 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 versatilie all-in-one solution for data sharing, sychoronization, backup, and surveillance and is backed by 3 years warranty and extendable to 5 years with purchase of EW201.