A weighted round-robin scheduler includes a round-robin table that stores a plurality of cycle link lists. The slot is sized to receive at least a portion of the arm and the tab of the housing so that the arm and the tab of the housing slides within the slot as the housing is moved relative to the sleeve, and the barb is positioned to engage the tab of the housing to limit movement of the housing relative to the sleeve. The DLC film 125 can be easily formed on the resin film, and has high heat conductivity, so that the film can be made to function as a heat radiating layer.