No boot if both processors power connectors are not plugged in Intel® Server Board S2600CW Family and Intel® Server Board S2600ST Family within the Intel® Server Chassis P4304XXMUXX or third party chassis
Unable to verify if both processors power connectors must be installed on the Intel® Server Board S2600ST Family and Intel® Server Board S2600CW Family within the Intel® Server Chassis P4304XXMUXX or third party chassis.
According to the section named Cable Connections, of the following link, both processors power connectors must be installed even if one processor is installed on CPU1 only.
Service Guide for Intel® Server Chassis P4304XXMFEN2 and P4304XXMUXX
See the image that shows the location of connectors
Confirmation that both processor's power connectors must be installed even if one processor is installed on CPU1 only.
For more information refer to the Service Guide for Intel® Server Chassis P4304XXMFEN2 and P4304XXMUXX