Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 211)

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APPENDIX
Appendix B
Flash-based Backup Module (ARC-1883-
BAT/CAP)
B-1 Overview
The ARC-1883-BAT/CAP kit includes the Flash-based module (FBM),
and one cable. The FBM features NAND flash memory and super
capacitor technology that provides cache offload capability to pro-
tect cached data in case of system power loss. The ARC-1883-CAP
(Flash+Supercap) module is mounted super-capacitor pack that
provides power for the backup of your data. The ARC-1883-BAT
(Flash+LiOn Battery) module is mounted battery pack that pro-
vides power for the backup of your data. When the module detects
loss of power, the super capacitor keeps parts of the ARC-8088
RAID controller active long enough to allow cache data to be copied
to the flash memory. The module attaches directly to the 12 Gb/s
SAS RAID controller by the cable.
B-2 FBM Components
The following figure provides the board layout and connector/jump -
er of the FBM.
B-3 FBM Outline
The following figures provide the upper and top view of the FBM
using supercap and battery.