The Portuguese was sent to the stands by referee Anthony Taylor during the Blues' controversial 4-1 win at Stamford Bridge and was hit with the charge and given three days to respond on Monday.
Speaking following the 3-0 Champions League win at Schalke, Mourinho insisted he will accept his punishment, which is expected to be a fine, after reading the referee's report.
The Chelsea boss said: "What the referee wrote is true. I was not aggressive, I was not offensive. I just had a disagreement.
"That in the game is resolved with 'shut up and sit down', (you) don't need to go to the stands.
"I accept the fine and against Manchester City (on Sunday) I can work."