A read channel apparatus is disclosed for reading data recorded on an optical storage system at a predetermined baud rate. The overlay target includes a first pattern and a second pattern and the electronic processor is configured to determine information about the relative alignment between the first and second patterns. A gear shaft and an motor shaft are suspended on the mounting bracket. The adenosine derivative has a general formula as follows: . A flat heat-conducting connection exists between the microcomponent and the temperature-control element.