The invention relates to the production of new Plasmodium mutants which are defective in the expression of the protein P36p. The latching device includes a latch member having a latching end and a spring end opposite the latching end, the latch member slidingly disposed within a front bezel of the storage device module and being movable between a latching position and a releasing position. The judging circuit compares the transmission capacity of each line. The clip may be converted to a temporary conversion format. A portion of the underfill near the chip serves as a first underfill portion. The transmission lines used on the third connector can achieve more stable electric connection.