C5550 MFP User’s Guide
Installing upgrades > 142
All that remains is to adjust the Windows printer driver to 
make full use of the new features. See “Adjusting windows 
printer drivers” on page 148.
M
EMORY
 
UPGRADE
This section explains how to install additional RAM memory into 
your MFP as a memory upgrade.
The model comes equipped with 256MB of main memory.This can 
be upgraded with an additional memory board containing either 
256MB or 512MB, giving a total memory capacity of either 512MB 
or 768MB maximum.
1. Switch the MFP off and disconnect the AC power cable.
2. Pull open the access panel on the side of the machine.
 Side cover open.eps 
3. Carefully remove the new memory board from its 
wrapping. Try to handle the board only by its short edges, 
avoiding contact with any metal parts as far as possible. 
In particular, avoid touching the edge connector.
4. Notice that the memory board has a small cutout in the 
edge connector, which is closer to one end than the other.
 RAM Board.eps