The PCB board has two sides. Each board has 8 pins. It is compatible with 2 to 8 pins (6 pins, 4 pins). One side for pin pitch size 0.65mm, the other side for pin pitch size 1.27mm. A side for pin pitch size 1.27mm, it can be used for most of the SO, SOP, SOIC to 2.54mm DIP.
