3Com SECPATH U200-CS Installation Manual page 109

Step2 Unplug all interface cables from the rear panel while keeping the ground cable connected, and remove
the fastening screws at both sides of the device.
Figure 7-1 Remove the screws at both sides of the device
Step3 Insert a flat-blade screwdriver into the long narrow unlock slot at the bottom of the chassis, and pry the
cover with the head of the screwdriver tipping towards you until the cover becomes loose, as shown in
Figure 7-2.
Figure 7-2 Insert a screwdriver into unlock slot and turn the screwdriver's head upwards
Step4 With the front panel of the device facing you, push the chassis cover about 5 cm (1.97 in) backwards.
Figure 7-3 Push the chassis cover about 5 cm (1.97 inches) backwards
Step5 Lift the rear of the chassis cover to separate the chassis cover from the chassis bottom, as shown in
Figure 7-4.
7-2