QNAP TL-R1620Sep-RP The TL-R1620Sep-RP SAS 12Gb/s storage expansion enclosure is designed for expanding the storage space of your QTS or QuTS hero NAS. Up to sixteen expansion enclosures can be daisy-chained via high-speed mini SAS HD cables to support up to 4.6PB raw capacity, ideal for archiving/backing up virtualization applications, surveillance recordings, large data, or multimedia. Featuring Broadcom® SAS DataBolt™ bandwidth optimization technology, the TL-R1620Sep-RP consolidates 6Gb/s infrastructure into 12Gb/s. With four mini SAS HD SFF-8644 Wide Ports, the TL-R1620Sep-RP delivers up to 192Gbps transfer speed when connected to a single host. When connected to a QTS/QuTS hero NAS that supports multipath routing, the TL-R1620Sep-RP can achieve smoother data transmission and continuous system operation. Note: The QNAP NAS requires QTS 4.5.1 / QuTS hero h4.5.1 (or later) with SAS ports or with a QXP PCIe SAS storage expansion card installed. Drive Bay 16 x 3.5-inch SAS 12Gb/s, SAS/SATA 6Gb/s Hot-swappable 4 x 12Gb/s SAS 3.0 wide ports 3U Rackmoun Operating temperature 0 - 40 °C (32°F - 104°F) Power Supply Unit 550W(x2), 100-240V Power Consumption: Operating Mode, Typical 207.13 W Fan 3 x 80mm, 12VDC