A toothed belt connector for making an endless belt has two leaves, adapted to be connected to each other by knuckles along one or more teeth. It then identifies the start of transmission of the sequence of synchronization-data symbols on the basis of the signal level of the registered, received signal and signals the time interval for the fixing of the gain or attenuation factor starting with the identified start of transmission of the sequence of synchronization-data symbols. The fan is configured to draw air into the interior of the housing and force air heated by the internal components of the computing device from the interior of the housing. A method of making a shell of refractory ceramic armor capable of conforming to the geometry is provided.