This attribute indicates the Energy Management Features the CM supports. If this attribute returns em1x1Mode(0) bit set, the CM supports the Energy Management 1x1 feature. If this attribute returns em1x1Mode(0) bit cleared, the CM does not support the Energy Management 1x1 feature. Note: This attribute only indicates if an Energy Management Feature is supported by the CM and does not indicate if the feature is enabled/disabled via the CM config file and registration request/response exchange and and does not indicate whether the CM is actively operation in an Energy Management Mode.