ZyXEL NSA-220 Dual SATA Bay Network Attached Storage Device with up to 2TB of Storage with DLNA Compatibility DLNA certified ensures compatibility with all certified digital home products Built-in FTP Server Provides Remote Access from the Internet Dual-bay Design Provides Maximum capacity up to 2 Terabytes Multi-Tier Data Protection Ensures Your Digital Treasure One-touch button Backs up data from attached thumb drive