Quick rant - Meraki's standard power cables all have the C13 connector. So when shipping out a batch of MS355's to a customer I was under the impression that they would suffice here.
Oh no no no no.... The MS355's use the 1025WAC PSU which when you zoom into the picture have the C15 connector.
Some heads up in the product datasheet would help. I know the datasheet shows the PSU type but its too easily skimmed over and a reference should be made under the Optional Accessories or Power Options and Specifications sections.