QNAP TS-453S Pro 4-Bay Slim NAS, Intel 2.0GHz Quad Core CPU with Media Transcoding, 2.5" SATA 6Gb/s (TS-453S-PRO-US) Use the TS-453S Pro as a PC with exclusive QvPC Technology Manage, share, and back up business data with Real-time Remote Replication (RTRR) NAS and iSCSI-SAN unified storage solution for server virtualization Supports VMware , Citrix , and Microsoft Hyper-V and advanced virtualization features Enhanced data security with high-performance AES 256-bit encryption and anti-virus Run multiple Windows/Linux-based virtual machines with the Virtualization Station Expand the total raw storage capacity up to 52TB with the economical UX-800P QNAP expansion enclosure Intel Celeron Quad Core 2.0GHz, 4GB DDR3L RAM (max 8GB), 2.5" SATA 6Gb/s, 2 Giga LAN, Read 224MB/s, Write 222MB/s, hardware transcoding, HDMI out with XBMC, Virtualization Station, Surveillance Station, max 1 UX expansion unit