Dell PowerEdge 6850 Backplane 2x3 Daughter Board UH920" is a replacement component designed for the Dell PowerEdge 6850 server. This backplane daughter board supports a 2x3 configuration for hard drive connections, facilitating data transfer and power supply to the drives. The part number UH920 ensures compatibility with the PowerEdge 6850 model, making it an essential component for maintaining or upgrading the server's storage infrastructure. This board is crucial for managing the interface between the server's motherboard and its installed hard drives.