IoSafe x517 NAS 5-Bay Expansion ChassisExpand the overall storage capacity ioSafe 1517 5 Bay NAS Array using the ioSafe x517 5 Bay Expansion Chassis. Much like the 1517, the x517 is fireproof up to 1550 degree F for up to 30 minutes and also protects data while fully submerged in up to 10 feet of fresh or salt water for up to 72 hours. The x517 supports 2. 5 and 3. 5 inch SATA drives, features, hot swappable drive bays, and connects to your 1517 using an integrated eSATA port.