SR2611-2S-S2R+ is an internal (6Gbps) RAID module designed in 2 of 5.25� CD-ROM bay to satisfy the demands of SMB and industrial computing environment. With LCD tents leaving you to easily grasp HDD status. SR2611-2S-S2R+ accommodates 2 of 3.5 � SATA III hard drive and offering both RAID 0 and RAID 1 functions . Uses the RAID 0 function to integrate the capacity of two hard drives and to enhance both read & write performance. On the other hand, uses RAID 1 function for data redundancy by mirroring data among both hard drives to prevent the event of a hard drive failure causes system shutdown. Model No SR2611-2S-S2R+ Drive Bay 2 CDRom DriveBay Drive Fit 2.5"/3.5" SATA III HDD x 2 Host Interface SATA III Connector (7Pin) RAID Level RAID 0 / RAID 1 Hot-Swap RAID 1 Power Supply 15 PIN Power Connector x1, BIG 4Pin Connector x 1 Engineering Configuration Port RS232 Status Display LCD Display Cooling Fan 6cm Fan Buzzer Alarm Yes Environment Detector Fan Failure / Overheat Dimension & Weight 146 ( W ) x 196 ( L ) x 85 ( H ) mm / 1.3 KG Certifications CE / FCC Operating System Windows, Linux Function Control Interface GUI (Windows Only) Packing Content SATA Cable�Internal RS232 Cable�External RS232 Cable�Accessory Kit HDD Capacity Single HDD tested up to 8TB RAID 0 Operating temperature 32° to 104° F (0° to 40° C) Storage temperature 32° to 104° F (0° to 40° C) Relative humidity 5% to 95% noncondensing