Features:

• 5 Bay SATA(I, II or III)/SAS 6G Hot Swap Module
• Steel material, RoHS compliance;
• Electromagnetism shield design
• Support two 4pin power connectors
• Ball bearing fan with air duct
• Patent balance handle -- No skew in/out
• LED indicators
• Support hot swap
• Support all operating systems
• Supports RAID 0, 1, 5 functions (RAID card required)

Specifications:

Drive Bay:Turn 3 x 5.25" drive bay to 5 x 3.25" hot swappable hard drive bay 
Interface: SATA to SATA; SAS to SAS 
Fan Sensor: Fan failure sensor
Alarm: Overheating alarm
Cooling System:One 80mm ball bearing fan with air duct provide excellent cooling air flow
RAID:Supports RAID 0, 1, 5 functions (RAID card required)
Power Connector: 4 pin molex power connector x 2
Data Connector: SATA (I, II or III)/SAS 6G data port x 5 
Dimensions(L x W x H):8.5 x 5.75 x 5 inch
Weight: 5 lbs