Seagate NAS Pro 2-Bay - 1 x Intel Dual-core (2 Core) 1.70 GHz - 2 x Total Bays - 4 TB HDD (2 x 2 TB) - 2 GB RAM DDR3 SDRAM - Serial ATA/300 - RAID Supported 0, 1, JBOD - 2 x 3.5" Bay - Gigabit Ethernet - Network (RJ-45) - 3 x USB Ports - 1 - 2 USB 3.0 Port(s) - NAS OS 4 - Desktop