<p>QNAP 16-bay 3U rackmount SAS 12Gbps JBOD dual controller expansion enclosure with SAS expander, 16 x 2.5"/3.5" SAS 12Gbps drives (2.5" SATA 6Gbps drives with optional QDA-SA2 accessory), 3 x SFF-8644 Mini-SAS HD SAS 12Gbps ports per controller, 550W redundant power, without rail kit</p>
