Zyxel Personal Cloud Storage Server [2-Bay] with Remote Access and Media Streaming [NAS520] 1.2 GHz dual-core processor with link aggregation for excellent performance Hot-swappable hard drives installation Bolt free design for quick and easy setup 90 mm fan for cool and quiet operation environment Personalized subdomain to simplify remote linking User friendly content access via zCloud mobile app handhelds Reliable, Secure, and User Friendly Personal Cloud Storage Access your data from anywhere