Cisco MGX 8850 Installation And Configuration Manual page 105

Use extreme caution when executing these steps with system power turned on.
Warning
To convert four single-height slots to two double-height slots in an operational system:
Remove the cabling from the back card unless it is the correct back card for the
Step 1
double-height card.
Step 2 Remove the back card.
Remove the front card.
Step 3
Repeat steps 2 and 3 for every other single-height module you remove.
Step 4
Rotate the screw that holds in the vertical center guide module.
Step 5
Where either the left wall of the card cage or a bulkhead exists on the left of the
single-height card slots, a simple, L-shaped bracket holds in the center guide module.
If the center guide module has either type of wall to the left, unscrew the track attached
Step 6
to the wall. If necessary, remove cards to unscrew it.
Step 7 Remove the vertical support bracket by moving it up and down until you can take it out.
A hole becomes visible in the center guide module for inserting a screw driver.
Step 8 Insert a screw driver and loosen the long screw that holds in the center guide module.
Step 9 Remove the center guide module.
Step 10 Install the double-height front card and back cards as needed.
A simpler situation exists when you install a new MGX 8850 switch in a non-Cisco rack or an
existing Cisco cabinet: just unscrew the center guide module and remove it. Install a blank faceplate
where you do not fill a double-height slot with a double-height card unless the enclosure has the
optional front door.
Converting Single-Height Slots to Double-Height Slots
Enclosure and Card Installation 4-53