Fujitsu CELSIUS J550 Operating Manual page 77

If there is no port already installed, the installation opening is closed off by a metal plate.
Do not discard the metal plate. In order to comply with the electromagnetic compatibility
(EMC) regulations, you must refit the metal plate if you remove the parallel port again.
► Keep the clips (1) pressed and push the metal plate out of the casing from the inside (2).
► Position the parallel port on the inside of the device at the appropriate place (3).
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System expansions
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