Solved: Amber blinking light indicvating (HP ProLiant DL380p G8) that Cache Module Status is disabled because a capacitor has failed to charge to an acceptable level | Experts Exchange
HPE 631671-B21 Smart Array P420/2GB FBWC 6Gb 2Ports Int SAS Controller, Wholesale 631671-B21, Price 631671-B21
HP 660093-001 - Write Cache Flashed Back Capacitor FBWC Battery for P420 and P421 Gen8 G8 - CPU Medics
Original Server Smart Array Card For Hp G8 P420 P420i Control Card 512m 1gb 1g Cache 610672-001 610674-001 /with Battery - Pc Hardware Cables & Adapters - AliExpress