HP SMART ARRAY P420 1GB 2GB FBWC PCI-E SAS RAID 2 PORTS CONTROLLER CARD BATTERY

If you choose 512MB Controller Raid Card:

Included:(1) P420 controller Card     (2)512MB Cache memory     (3)Battery     (4)box.

If you choose 1GB Controller Raid Card:

Included:(1) P420 controller Card     (2)1GB Cache memory         (3)Battery     (4)box.

If you choose 2GB Controller Raid Card:

Included:(1) P420 controller Card      (2)2GB Cache memory         (3)Battery     (4)box.