Heatsink R540 2nd CPU

Dell KG4MM-RFB heatsink is a refurbished cooling part listed for the second CPU in an R540 server. It is identified by the exact part number KG4MM-RFB, making its role and reference clear.

This component is intended to serve the second processor position in the R540. The listing describes the part as refurbished, so it is a reconditioned item rather than a new one. The confirmed identification is limited to the heatsink, its second-CPU use in the R540, and its refurbished condition.