Synology ds213 network attached storage. to keep your data save and view them any where best clouds storagethe synology ds213 has a 2.0 ghz arm-based cpu, 512mb of ddr3 ram, and supports two 3.5" or 2.5" sata(ii) hard drives, with a maximum capacity of 8tb (2 x 4tb). it features two usb 3.0 ports, one usb 2.0 port, an sd card slot, and a gigabit lan port. the device includes a hardware encryption engine, supports hot-swappable hdds, and runs on synology's diskstation manager (dsm) operating system