Connecting External Devices - Fujitsu CELSIUS J550 Operating Manual

Connecting external devices

Read the documentation on the external device before connecting it.
With the exception of USB devices, always remove all power plugs
before connecting external devices!
Do not connect or disconnect cables during a thunderstorm.
Always hold the plug of a cable when removing it. Never unplug a
cable by pulling the cable itself.
To ensure that your device works properly, use only the connection cable
supplied or use a high-quality connection cable.
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