Synology DiskStation 8-Bay (Diskless) Network Attached Storage - Black (DS1812+) CPU: Dual Core 2.13GHz with floating point RAM Size: 1GB?DDR3 (Expandable, up to 3GB) Internal HDD: 8x 3.5" or 2.5" SATA2 (Hard drive not included) Max Internal Capacity: 32TB (8x 4TB HDD) External HDD Interface: 2x USB 3.0 Ports, 4x USB 2.0 Ports, 2x eSATA Ports LAN: 2x Gigabit