OHAUS i-DT61XWE Instruction Manual page 8

EN-6
10. Pass the USB cable through the M16 connector, and then re-attach and tighten
the nut of the cable on the M16 connector with a wrench. (Torque is
2.5N*m±0.5.)
11. Plug the interface on the cable to the motherboard (circled). Then screw the
grounding wire on the cable to another circled position.