Abstract: A cleaning solution dispenser system to automatically dispense a predetermined quantity of cleaning solution along with a flush is disclosed. The system includes the flush water tank with at least one through hole, the water tank comprising a tank body and a lid covered on the tank body. The system includes a first container installed outside having a removable stopper to allow the first container to be filled with the cleaning solution, and a tube with one end connected to the firs container at a bottom portion and the other end inserted inside the flush water tank via the at least one through hole. A second container installed inside and on at least one inner wall of the flush water tank and in receipt of the other end of the tube. The first container is adapted to refill the cleaning solution front the first container into second container.

Abstract: A modular switch, comprising a plurality of backplane sub-buses; a plurality of cards which are each allocated one or more of the backplane sub-buses; and a controller which dynamically allocates the backplane sub-buses to the plurality of cards, based on the bandwidth needs of the cards. Preferably, the bandwidth capacity of substantially all the backplane sub-buses is less than the sum of the maximal transmission bandwidth capacities of the cards.