3-bay 3.5" HDD Enclosure with 12Gb/s SAS & SATA BackplaneSK32303 is designed with standard mounting holes for converting 2 x 5.25" drive bays into 3 x 3.5" hot-swap SAS & SATA hard drive bays.- Fits chassis with two 5.25" drive bays- Back-mounted 60mm fan to deliver optimized cooling performance- HDD failure and activity indicators on each hot-swap drive carrier- Supports inrush current control for drive hot-swapping- Alternative HDD activity and failure single input sources- Built-in temperature sensor and overheat warning system