If you purchased the RGB models of the Pop Air series, Focus 2, or Meshify 2 cases and notice that the power LED connectors from the manual are not with the rest of the I/O cables. They are not missing, they are not included.
The manual is made for both versions of each case. The RGB and non-RGB versions. So it shows all of the connectors that may be found on either version of the case.
Only the non-RGB versions of these cases have the separate power LED connectors. As the RGB versions of these case have the power LED built into the RGB controller. That way it can match with the rest of the devices connected to the controller.