2-7 
 
z  Do not touch the electronic components on an interface card to 
avoid damaging the interface card. 
z  After removing an interface card, install a blank panel to the 
empty slot to prevent dust from entering the switch. 
z  If there is a ”DO NOT REMOVE” label on the rear panel, the 
switch does not support interface cards. Do not remove the blank 
panel that has the label on it.