HP 749796-001 Smart Array P440ar - Adaptive RAID On Chip(AROC) daughterboa

Smart Array P440ar - Adaptive RAID On Chip(AROC) daughterboard controller - Two internal x4 mini-SAS ports, 2GB of embedded flashed back write cache (FBWC) HP Products->Memory, 12Gbsec SAS transfer rates - Does not include battery, FBWC cannot be ordered separately