It is an Internal multi-drives aluminum enclosures, SAS/SATA backplne design supports 5 SAS & SATA Hard Disks with hotswappable trays, built-in fan for self-ventilation; hotswappable trays with individual key locks, power/access LEDs; environmental monitoring with LEDs for fan/temperature and mutable buzzer alarm.

• RoHS Compliance Version: Yes
• Standard Drive Bays: 5.25" Drive: 4
• Alarm: Buzzer Beeping if fan fail (too slow or stop) or over temperature (over 55°C) occurs
• Cooling Fan: One 8 x 8 x 2.5 cm Cooling Fan
• Data Transfer Rate: SAS / SATAII 3 Gbps
• HDD Interface: SAS / SATA I/II
• Host Interface: SAS/SATA (discrete connector)
• Hot-Swap: Both on Host and Device
• LED Display: Green - Power on indicator Blue - Busy (HDD Accessing) indicator
• LED Display for Environmental Monitoring: POWER on LED - white, FAN normal - green; fail - red (too slow rpm or stop), TEMP normal - green; over 55°C - red
  (We strongly recommend customers to replace a new fan ASAP after the fan failed)
• Material: Aluminum Housing & Plastic tray face
• O.S. Support:
  • OS Independent
  • Packaging Information: Enclosure x 1
  • HDD Tray x 5
  • Manual CD-ROM x 1
  • Hard Disk Drive mounting screw x 20
  • Key for HDD tray x 2
• Power Connector: 2
• Dimensions (W x H x D): 5.75 x 5 x 8.7 inch