Create more space for hard drive with hot-swap capability, BPU-230SATA series supports RAID 1/0/1+0/5 configuration for high performance or redundancy data application. Aluminum construction provides light weight but strong stability and extra 80mm fan keep hard drive at maximum performance. High density multi-disk storage backplane that allows multiple 3x3.5" SAS/SATA hard drives to be mounted into 2 standard 5.25". Aluminum construction provides best heat dissipation required for high performance SAS/SATA drives, is designed with excellent front to back vent airflow. Applications: Digital Audio Editing,Video Editing (SD or HD),Security System,SOHO SMEs With Limit HDD Tray and Data Protection or Disk-to-Disk Backup. - Stylish aluminum color handle and heat-sink body - Support Hot-Swap & RAID Configuration (need an additional RAID controller) - Aluminum Design with Conductive Dissipation Grooves - Power, fan and high temperature LED indicators - Super Air Ventilation & Heat Sink with 80mm Fan - High Performance Transfer Rate up to 6.0 Gb/s - Support 3.5" SAS I/II & SATA I/II/III HDDs - Support 2.5? SATA/ SAS Hard Drive - Equipped with Fan Speed Control Switch