IBM 3745 Connection And Integration Manual page 30

Step
1-8
3745 All Models & 3746-900: CIG
If you are only plugging in an AUI cable, go to Step 3 on page 1-9
Otherwise, continue with the next step.
2
Unplugging an AUI cable.
Repeat this step for every AUI to be unplugged.
1. Unlock the latch by pushing it to the right (the open padlock
position). It may require a lot of force to move it.
J1
2. Pull out the plug.
If you are not plugging in an AUI, go to Step 6 on page 1-11.
Otherwise, continue with the next step.
3745
ESD Plate
J2
Locking Latch