A cable management panel including a chassis and a drawer slidably mounted to the chassis. Instead of copying the data packet passed to it by a higher or lower protocol layer implemented with the GPLC, a protocol layer implemented with the GPLC acts upon the common data buffer by moving a start pointer and an end pointer along the data contained in the common data buffer prior to its invoking of the next higher or lower protocol layer implemented. The pump has an outlet located in a direction away from the piston. The outside diameter of the outer sleeve at the level of the bottom edge of the peripheral edge frame is smaller than the inside diameter of the inner cup just above the bottom shoulder and is greater than the inside diameter of the inner cup just below the bottom shoulder. The log is preserved through the failure, such that the log is available to the master storage unit upon recovery from the failure. During the process, a contact electrode in a contact solution contacts a contact region on surface of the conductive layer with the contact solution.