QNAP TL-R400S 48TB 4 Bay NAS Rackmount Solution Installed with 4 x 12TB Toshiba Enterprise Drives High-capacity TL SATA JBOD not only can expand NAS storage, but also Windows & Ubuntu computers & servers. SFF-8088 (or SFF-8644) connection cable supports four SATA 6 Gb/s channels per cable (24 Gb/s in total) & provides faster data transfer speeds than e SATA & USB (Universal Serial Bus). The short depth rackmount NAS is perfectly suited for installation in a compact rack, or places with a lot of cabling. TL-R400S Rackmount JBOD storage enclosure means that you can back up & expand your QNAP NAS, Windows & Ubuntu computers & servers. The TL-R400S features four 3.5-inch SATA 6 Gb/s drive bays, the shallow rack design is perfect for installing the TL-R400S in a compact rack, or in areas with a lot of cabling. TL-R400S comes with a QXP PCIe card for connecting the enclosure using a SFF-8088 (or SFF-8644) cable. It provides reliable read/write performance for smooth storage & backup tasks.