IBM 1U Installation And Maintenance Manual page 41

12. Route the keyboard-and-mouse cable:
a. Route the cable through the slot on the left side of the cable-routing area
on the underside of the keyboard. Do not route the cable through any of
the other three slots. (See the following illustration.)
Note: The following illustration shows the underside of a fully extended
console unit that is installed in a rack.
b. Push the keyboard-and-mouse cable through the slit in the plastic bushing
that you removed in step 5 on page 28, and push the bushing into the
cable-routing cutout in the console unit frame.
Chapter 4. Hardware maintenance information
31