For Proper Operation
Observe the following notes for successful operation of US320f. Ignoring these notes can cause malfunction or failure of
US320f.
When you have just turned off US320f, wait at least 10 seconds before turning it back on. If US320f is connected to
an uninterruptible power supply (UPS), set a delay of at least 10 seconds in the power-on schedule.
Turn off the power of US320f and unplug the power cord from the outlet before relocating US320f.
Clean US320f on a regular basis. Regular cleaning proactively prevents various failures.
Lightning may cause a momentary voltage drop. To prevent this problem, it is recommended to use an
uninterruptible power supply (UPS) unit.
It is recommended that US320f should be stored in a place where a stable room temperature is able to be
maintained. It is preferable to store US320f under conditions of temperature: –10°C to 55°C (14°F to 131°F),
humidity: 10% to 95% (non-condensing).
Turn off cellular phones or pagers around US320f. Radio interference may cause malfunction of US320f.
Observe the following notes on using and connecting an interface cable.
– Do not use a damaged cable.
– Do not step on the cable.
– Do not place any object on the cable.
– Do not use US320f with loose cable connections.
If US320f or the option devices (add-ons) connected inside US320f are moved suddenly from a cold environment to a
warm environment, condensation might form inside US320f or its add-ons, causing malfunction or damage if
US320f is used in this state. To protect your important data and assets, be sure to consider the environment
carefully before using US320f.
Make sure that all add-ons and peripherals are able to be attached or connected to US320f. Note, however, that
even if add-ons or peripherals can be physically attached or connected, they might damage US320f if they do not
work properly.
We recommend only using official NEC add-ons. Add-ons such memory sticks or hard disk drives from other
companies might be able to be used with US320f, but if these add-ons cause US320f to fail or become damaged,
NEC will not cover the cost of repair, even if the damage occurs within the warranty period.
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Express5800/US320f User's Guide
Precautions for Use (Be Sure to Read)