A disk drive system and method for implementing the same. For dual channel analog signal processing, the common frequency source is not locked to either channelinput signal. The transceiver circuitry supports a phase-locked-loop source synchronous mode that can be used to receive data from transmitting integrated circuits that are clocked with a common clock. The system determines if the lower level rights is available for licensing by forming at least a first implicit relationship between the general level of rights owned, and a general level of rights licensed out. A grout hole can extend from the upper face to a lower face in a spaced manner from the leveling hole. Different configurations and modes of operation are possible, but in each configuration the elements are arranged relative to the input and output fibers, such that a beam of light is incident or outgoing at an angle of 45 degrees to the surface of a corresponding element.