Cloud Storage for Family: Independent access by multiple accounts. Safely store photos, videos, movies, up to 20TB(3.5' SATA HDD). Separate privacy from shared content. Permanent Free Private Cloud & Duplex Mode:Share photos and videos to different devices and systems anytime, anywhere without paying any monthly fees. APP Connection & VPN:All functions are implemented on the Weline APP without the complicated configuration(IOS: Download from Apple Store; Android: Download from Google Play). For global connectivity, VPN is automatically connected when you log in to the Weline app. The server is local. And your data and account information is safety. Tool-free Installation:The online network hard drive case comes with a magnetic cover. Connect DC adapt and LAN cable after installing the hard drive, and then press the switch button with the blue LED light up.