Sir Alex Ferguson will not appeal against the £10,000 fine and two-match touchline ban handed to him by the Football Association on Monday.
Ferguson was sent to the stands by Rennie
The Manchester United manager was found guilty of misconduct following a verbal outburst against officials at Newcastle in August.
The Football Association was informed of Ferguson's acceptance of the punishment on Tuesday.
An FA spokesman confirmed: "We have received official confirmation that Sir Alex
Ferguson will not be appealing against the two-match ban imposed by a
disciplinary commission yesterday."
He will serve the ban in Saturday's Premiership home
match against Fulham and then the Carling Cup clash with Leeds next week.
The Scot was sent to the stand by referee Uriah Rennie following heated words with fourth official Jeff Winter during the Newcastle clash, which United won 3-0.
Ferguson reacted angrily to Rennie's decision not to punish Andy O'Brien for bringing down Ryan Giggs on the edge of the Newcastle area.
The manager kicked a ball away in disgust and remonstrated with fourth official Winter on the sidelines before being dismissed by Rennie.
Winter was then subjected to a sustained four-letter tirade from the Scot.
Ferguson faced two separate counts, one relating generally to alleged "improper conduct" and the other specifically to claims that he used abusive language to the match officials.