OHAUS i-DT33XW Instruction Manual page 10

EN-8
6.
Take out the USB cable supplied and pass it through the strain relief for option
connector. Make sure the watertight seal is attached to it, and then connect its
USB interface to the connector on the USB board (circled).
Note: If you install RS232 and the USB kit at the same time, please use the
supplied watertight seal with two holes. Pass the RS232 cable through one hole of
the watertight seal and the Ethernet cable through another.
Watertight Seal (with One Hole)
Strain Relief for Option Connector
Watertight Seal （with Two Holes）