④ Reset hole
⑤
USB socket
⑥ Switch on/off
⑦ Base
⑧ Image combiner (Combiner)
⑨ MIC
4.2. The Composition of Base
① Adhesive pad
② Universal support table
③ Universal support table fastening screw (the screw has been
adjusted to the fine adjustment of the universal support table
before leaving the factory)
