Dshot&reg; Sata Aluminum 4-Bay Mobile Rack Backplane for 2.5in SATA/SAS Drives - Hot Swap SSDs/HDDs from 5-15mm - Supports SAS II & SATA III (6 Gbps) Hot swap with ease by installing 4 SSDs/HDDs 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 50,000+ Insertion Rating / Aluminum case Interchangeable drive tray with 1-bay backplane SATSASBP125 / Two 40mm fans for ventilation,Replacement for SATSASBAY425