The S5570S-54S-EI has a power supply whose serial number and voltage/power information cannot be viewed during diagnostics.
On-site inspection of the power supply revealed a 70W power supply.
According to the official website, the 5570s is configured with only one model of 70W power supply, the CA-70A12, with the following description.
When using the CA-70A12 power supply, the electronic label information of the power supply cannot be viewed.
It is normal that some power supplies do not display serial number information as they leave the factory without electronic tags