Hot swap with ease by installing 4 ssdshdds into one 5 25in bay multi bay mobile rack backplane drive caddy 2 5 hard drive adapter works with 5 15mm 2 5in sas sata drives including samsung 840 evo ideal for drive sharing and redundant backup supports sas ii sata iii 6 gbps lockable and removable trays 50 000 insertion rating durable metal housing two 40mm fans for ventilation interchangeable drive tray with 1 bay backplane satsasbp125 replacement for satsasbay425