It is essential in the modern connected world to access your data anytime anywhere with your latest mobile gadgets the zyxel nas520 2 bay personal cloud storage is an one stop for all your private documents photos music and videos to provide the most convenient access to all your digital contents powered with a 12 ghz dual core processor and link aggregation capability backup files download files andor stream hd videos are faster with usb 30 and sdxc memory card slot the nas520