Customer-Replaceable Units

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The following table lists the customer-replaceable units (CRUs) in the controller and directs you to the replacement instructions.

CRU	Description	Replacement Instructions
Battery	Lithium coin-cell battery that powers the CMOS BIOS and real-time clock.	Servicing the Battery (CRU)
DIMMs	Replace memory modules in the controller.	Servicing the DIMMs (CRU)
Storage drives	Supports SAS-3 hard-disk drives (HDDs) and SATA solid-state drives (SSDs)	Servicing Storage Drives (CRU)
Fan modules	Four fan modules for cooling the motherboard assembly and installed components.	Servicing Fan Modules (CRU)
PCIe cards	PCIe cards for client, disk shelf, and cluster I/O connectivity. Note - The internal SAS-3 PCIe HBA card is a field-replaceable unit (FRU) and should only be serviced by authorized Oracle Services personnel. See Servicing the Internal HBA Card (FRU).	Servicing PCIe Cards (CRU)
PCIe risers	Houses and connects the PCIe cards.	Servicing PCIe Risers (CRU)
Power supplies	Two fully redundant AC power supplies.	Servicing Power Supplies (CRU)