A method of power amplifier predistortion that makes use of a compression detector circuit in a feedback loop in order to adapt the channel gain for changing transmitter behavior. The storage controller is adapted to receive READ and WRITE requests from an external host, and is coupled to the FLASH storage system and the hard drive storage system. The composition is formulated according to the invention to provide a desired removal rate of the low-k dielectric andor photoresist from the surface of the wafer. A plurality of first signal terminals and a plurality of second signal terminals each have a fastening portion, a contacting portion and a flexible portion.