This object identifies the default administrative 10 or 100 Mb/s baseband MAU type, to be used in conjunction with the operational MAU type denoted by sIfMauType. The set of possible values for this object is the same as the set defined for the sIfMauType object. This object represents the administratively- configured type of the MAU. If auto-negotiation is not enabled or is not implemented for this MAU, the value of this object determines the operational type of the MAU. In this case, a set to this object will force the MAU into the specified operating mode. If auto-negotiation is implemented and enabled for this MAU, the operational type of the MAU is determined by auto-negotiation, and the value of this object denotes the type to which the MAU will automatically revert if/when auto-negotiation is later disabled. NOTE TO IMPLEMENTORS: It may be necessary to provide for underlying hardware implementations which do not follow the exact behavior specified above. In particular, when sIfMauAutoNegAdminStatus transitions from enabled to disabled, the agent implementation must ensure that the operational type of the MAU (as reported by sIfMauType) correctly transitions to the value specified by this object, rather than continuing to operate at the value earlier determined by the auto-negotiation function.