Lexmark T640 User Manual page 33

Removal
1
Remove the system board access cover. (See Accessing the printer system board.)
Note: If an option card has been installed, you may need to remove the option card before removing the
flash memory or firmware card.
2
Squeeze the flash memory or firmware card locking clips.
3
Pull the card out.
Avoid touching the metal pins on the bottom of the card.
4
Place the flash memory or firmware card in its original packaging.
If you do not have the original packaging, wrap the flash memory or firmware card in paper, and store it in a box.
5
If you removed an option card to access the flash memory or firmware card, reinstall the option card.
Installing and removing options
Installing or removing a flash memory or firmware card
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