View larger Fast and Reliable Performance for Productivity NAS520 2-Bay Media and Personal Cloud Server Being able to access your personal files and data is crucial in such a technology driven world. The ZyXEL NAS520 provides secure and easy access to all your personal files anytime, anywhere. Featuring both public and private options, you can store and access your personal data securely without any interference. Its 1.2 GHz dual-core CPU handles all your intensive network data management tasks. USB 3.0 ports with data transfer rates of up to 4.8 Gbps provide a fast interface for external storage and an SD slot with t model : ADATA XPG SX6000 Lite 512GB PCIe 3D NAND PCIe Internal Solid State Drive tag : NAS