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usb_driver. 
2. Connect the USB to the computer, the Windows 
system will show finding a new hardware. 
Choose specific directory C:\ usb_driver 
according to the instruction. 
3. After Driver installation, a new COM port will be 
added to the Ports in the Device Manager. Port 
number will be ranged following the primary COM 
ports, such as: COM3 or COM4.   
1.4  Once the drive software is installed, start the 
application software, connect the meter to the 
computer by USB, then search for the COMX port 
occupied by CP210X, press 
  button,the
‘
’  symbol will not appear on the display,
which indicate the meter is transmitting data to the 
computer.