OHAUS i-DT33P Manual De Instrucciones página 8

EN-6
2. Release the strain relief for option connector (circled) including the watertight
seal in it on the bottom of the indicator and remove the plug at the end of it.
3. Take out the cable and the USB board supplied and pin the upper left corner
and the lower right corner of the board on the positioning column (circled),
facing up.
Watertight Seal（with One Hole）
Plug