IBM BladeCenter HT 8740 Problem Determination And Service Manual page 61

e. Using a phillips-head screwdriver, loosen the captive mounting screws on
the cable management trays so that they do not secure the trays and bezel
collar to the BladeCenter HT unit.
f. Remove the bezel collar by lifting up the bezel collar and then pulling the
bezel collar away from the BladeCenter HT unit.
Chapter 4. Removing and replacing BladeCenter HT components
43