The TS-251 provides a high performance and; high capacity storage solution for SOHO and; home workgroup & SMB users. Powered by the advanced QTS operating system the TS-251 performs as an easy-to-use yet powerful NAS for data backup file synchronization remote access home entertainment & is ideal for users to build a personal cloud to access their data easily. Transcode Full HD videos on-the-fly or offline* Play 1080p videos with 7.1 channel surround sound pass-through via HDMI output Create a personal cloud & stream your multimedia library via DLNA Air Play & Plex Centralize your file storage sharing & backup Run a virtual machine & extend the functionality of the NAS with an integrated virtualization solution Expand the total raw storage capacity up to 60TB (with maximum 10 hard drives) with the economical QNAP expansion enclosure UX-800P Powered by a new 22nm 64-bit dual-core IntelĀ® CeleronĀ® 2.41 G Hz processor with 1GB energy-efficient DDR3L RAM (upgradable up to 8GB) coupled with the support of dual LAN ports & HDMI connectivity the TS-251 is a powerful home NAS with supreme value & great performance to deliver up to 220MB/s read and; write speeds. The TS-251 can also automatically increase the processor's clock rate from 2.41 G Hz to 2.58 G Hz when needed for CPU-intensive tasks. The TS-251s fast encryption & decryption performance provides transfer speeds of up to 68MB/s with AES-256 bit volume encryption boosting system performance and; security while ensuring the safety of sensitive personal data stored in the TS-251..