An apparatus for loading fibers in a fiber suspension with calcium carbonate has a housing with an inlet and an accept outlet. Each storage resource is associated with a resource group and storage resource object having a resource group attribute associating the storage resource object with one of the resource groups. A first fan and a second fan may be disposed within the first control compartment and the second control compartment, respectively. A bridge piece in the device has the an adjustable and telescopic structure that can be adjusted according to the width of the mobile phone. Laser transmitters, photodiode detectors, and smart electronics are used to implement the crossbar switch functions.