HP Compaq dc7100 DT Reference Manual page 98

Removal and Replacement Procedures - Convertible Minitower (CMT) Chassis
6. Slide the pivoting bar to the right 1 then, lift the left end 2 to remove it from the chassis. To
replace the bar, slide it into the socket on the right 1, lower it into position 3, and slide it to
the left 4 to secure it in place.
7. With the bar in a slightly rotated position, install the latches through the openings in the back
of the chassis and press them firmly in place on the rotating bar.
The green latches are marked "R" and "L" for your convenience.
6–18 361288-003 Service Reference Guide, dc7100