Synology RackStation 4-Bay 12TB (4 x 3TB)Network Attached Storage, RS812 4300 (RS812 4300) CPU Frequency: 1.6 GHz Memory: 512 MB DDR3, Maximum Internal Capacity: 16 TB System Fan: 40 mm X 40 mm X 3 Interface: 2x USB 2.0 port, 1x eSATA, Ethernet RJ-45, Gigabit X 2 Noise Level: 19.2 dBA