TS-431P2-4G QNAP 4-Bay NAS with Annapurna Labs AL314 Quad core 1.7GHz CPU, 4GB DDR3 SODIMM RAM expandable to 8GB, SATA 6Gb/s, 2x Gigabit Ethernet ports, 3x USB 3.0 ports, hot-swappable hard drive bays