A packet-switch system utilizes a linecard-to-switch protocol to integrate linecards with a switch core. The tube set includes a transfer member for automatic transfer of possibly remaining contents in supply bags or heater bags of the tube set to a waste receiver. It includes a locking stressing mechanism, an energy-storing spring, a hollow plunger displaceable in a cylinder and a nozzle. The circuit is further configurable to generate and transmit phase-locked clock signals to the first number of ranks, and to generate the first number of chip-select signals in response at least in part to the phase-locked clock signals, the address signals, and the second number of chip-select signals.