Synology DiskStation 2-Bay 6TB (2 x 3TB) Network Attached Storage (NAS) (DS213 2300) CPU Frequency: 1.067 GHz Memory: 512 MB DDR3, Maximum Internal Capacity: 6TB System Fan: 92 mm X 92 mm X 1 Interface: 2 x USB 3.0 Port, 1x USB 2.0 port, 1 x SD Card Port, 1 x eSATA Port, 1 x RJ-45 10/100/1000 Gigabit Ethernet Port , Gigabit X 1 Noise Level: 19.9 dBA