QNAP TS-431+-US 4-bay Personal Cloud NAS with DLNA, mobile apps and AirPlay support. ARM Cortex A15 1.4GHzDual Core, 1GB RAM (TS-431+-US) Build a private cloud-based notebook to share with colleagues and friends with the Notes Station 2.0 and Qnotes mobile app Organize & manage files and backup tasks in one centralized location Full NAS encryption by volume-based technology and hardware acceleration Synchronize files between computers, laptops, and mobile devices Create a 24/7 surveillance center for your home/small office Stream your multimedia library via DLNA, AirPlay & Chromcast and play on TV Transcode videos offline and enjoy smooth video streaming even with restricted network connection ARM Cortex-A15 Dual Core 1.4GHz, 1GB RAM, 2LAN, SATA 6Gb/s, USB 3.0, Read & Write 200MB/s, hardware encryption with 100MB/s+, HDD hot-swappable