3Com 5500G Getting Started Manual page 16

16 Chapter 3: OSN|M Installation
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Figure 3 Install an OSN|M in a switch
(1)
(1) Rear panel of the switch
Removing the OSN|M
1 Put on an ESD-preventive wrist strap and ensure that the ESD-preventive
wrist strap is properly grounded.
2 Loosen the fastening screws on both sides of the OSN|M using a
screwdriver.
3 Hold the two sides of the OSN|M front panel with both hands and draw
back the module until the module is fully separated from the switch.
CAUTION:
Hold the two sides rather than the middle of the OSN|M front panel to
■
install or remove the OSN|M. Otherwise, the OSN|M may be out of
shape.
Do not apply excessive force to install or remove an OSN|M, and do
■
not touch the surface-mounted components directly with your hands.
After removing an OSN|M, if no new module is to be installed, install
■
the filler panel in time to prevent dust and ensure normal ventilation
in the switch.
(2)
(2) Front panel of the OSN|M