Thermaltake 5.25" (x1) Bay to 2.5" (x4) Bay Mobile Rack HDD Canister RC1400101A. Read & Write 4 Hard Drives simultaneously. Supports All Standard 2.5" SAS, SATA (SSD) Hard Drives up to 15mm thickness in height . Support and Compatible with All Computer Cases (Desktop or Industrial Rackmount) with any available 5.25" Drive Bay. Plug & Play / Hot-Swap Capability for Rapid Multi HDDs Access & Exchange*. Dedicated Hard Drive LED Status Indicators for each individual HDD Tray. High Performance Transfer Rate up to 6Gbps for SAS & 3Gbps for SATA (SSD). Support RAID 0, 1, 5, 10 functions*. Industrial-Grade Security Lock for each individual 2.5" HDD Tray. Aluminum Body Construction for Durable Stability. Built-in Dual 40mm Cooling Fans maximizes Heat Dissipation & Exhaust. * Hot-Swap & RAID functions require SATA & optional RAID Controller.