IBM 9080-M9S Manual page 487

Figure 418. Removing the UPIC cable from the system control unit
2. At the rear of the system, put the cable management bracket in the service position as shown in the
following figure.
a) Pull out the quarter-turn fasteners (B) and turn them to disengage them while you lift the cable
management bracket (A) to its raised position.
b) Turn the quarter-turn fasteners (B) to engage and lock the bracket into position.
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