A belt for a paper making machine, which has good ability of squeezing water from moist paper and which, during use, has reduced damage on the outer peripheral surface of the belt. The device can couple to a host with a host processor and host memory. The programmed control unit controls each peripheral device by transmitting a clock signal and a controlling signal thereto via the clock line and one of the data lines that has the same address as that of the peripheral device. An exemplary clock generator based on an FPGA is also disclosed. The configuration request message is for discovering a logical network address for the host. The system has at least three supporting springs attached to a micro-mirror providing at least two rotational degrees of freedom thereof.