Both modules use same battery pack but with different cable type. ARC6120BA-T121-12G is shipping with 2600-1C1412-HI00 for ARC-1883 series RAID controller only. ARC6120BA-T121 is shipping with 2600-1C1212-II00.
>, FBM=ARC-1883BA-T100-SuperCap and ARC-1883BA-T100-BAT
Tags: ARC-6120BA-T121, ARC6120BA-T121-12G, Q10241403