IBM 9080-M9S Manual page 31

a. Remove the white plastic lock (A) from the plug housing.
Figure 23. Removing the UPIC cable lock
b. Push down on the blue cable latch (B) and pull out the UPIC cable from the system control unit.
Figure 24. Removing the UPIC cable from the system control unit
6. Attach the electrostatic discharge (ESD) wrist strap.
Cables 25