11878A Keysight Adapter NewFeatures: Type 3. 5 mm male, Type N male adapter included 3. 5 mm male, Type N female adapter included 3. 5 mm female, Type N female adapter included 3. 5 mm female, Type N male adapter included The Keysight 11878A adapter kit provides the RF components generally required when an SMA or 3. 5 mm device needs to be measured with a network analyzer type N configuration. This kit includes four type N to 3. 5 mm adapters for both male and female connectors.