Areca ARC-6120BA-T113 storage device backup battery 1100 mAh

The Battery Backup Module is an add-on module that provides power to the SAS/SATA RAID controller cache memory in the event of a power failure. The Battery Backup Module monitors the write back cache on the SAS/SATA RAID controller, and provides power to the cache memory if it contains data not yet written to the hard drives when power failure occurs. Mechanical