What is the most likely cause of a blade not powering up when it works in another chassis with the same configuration?

The most likely cause of a blade not powering up in a specific chassis while functioning properly in another chassis with the same configuration is related to the slot in the backplane. Each blade typically connects to a backplane that provides power and data connections. If the specific slot in the backplane is malfunctioning or damaged, it could prevent the blade from receiving the necessary power or data pathways to operate correctly.

In instances where components work in one environment but not in another, it's often indicative of a hardware issue at the connection point. Investigating the slot in the backplane would be crucial, as it encompasses both electrical connection integrity and signal pathways essential for the blade's operation.

While factors like chassis firmware, power supply, and the blade management module could impact functionality, these are less likely to be the direct cause when the equipment functions elsewhere. Specifically, if the configuration is identical, issues related to individual slots and physical connectivity become the primary suspect for the malfunction.