Sony PS4 Safety Manual page 7

About the USB device
If "An unknown USB device has been connected" is displayed
on-screen, the reason may be one of the following:
• The connected USB device is not compatible with the system.
• The connected USB device is compatible with only some
software titles.
• Multiple USB devices are connected to the USB hub.
Notes on safety when using the DUALSHOCK ® 4 Wireless
Controller*
• Do not handle damaged or leaking lithium-ion batteries. If
the internal battery fluid leaks, stop using the product
immediately and contact technical support for assistance. If
the fluid gets on to your clothes, skin or into your eyes,
immediately rinse the affected area with clean water and
consult your physician. The battery fluid can cause blindness.
• Do not use the vibration function if you have any ailment or
injury to the bones, joints or muscles of your hands or arms.
If you have an ailment or an injury, do not use the wireless
controller to play software titles that contain the vibration
function unless you first disable this function.
• When using the motion sensor function of the wireless
controller, be cautious of the following points. If the
controller hits a person or object, this may cause accidental
injury or damage.
– Before using the motion sensor function, make sure you
have enough space to move around.
– Firmly grip the wireless controller to prevent it from
slipping out of your grasp and causing damage or injury.
– When using the wireless controller with a USB cable,
ensure that the cable cannot hit a person or any object,
and do not pull the cable out of the PS4™ system whilst
playing.
– Some PlayStation ® , PlayStation ® 2 and PlayStation ® 3
system peripherals such as the analog controller
(DUALSHOCK ® ), the analog controller (DUALSHOCK ® 2)
and the DUALSHOCK ® 3 Wireless Controller are not
compatible with the PS4™ system. For details, visit
eu.playstation.com/compatibility.
• Do not stare at the light bar on the controller when it is
blinking. If you experience discomfort or pain anywhere in
or on your body from light stimulation, discontinue use
immediately.
• Charge in an environment where the temperature range is
between 10 °C - 30 °C. Charging may not be as effective
when performed in other environments.
• The battery has a limited lifespan. Battery duration will
gradually decrease with repeated usage and age. Battery
life also varies depending on the storage method, usage
state, environment and other factors.
• When the wireless controller is not used for an extended
period of time, it is recommended that you fully charge it at
least once a year in order to maintain battery functionality.
* These notes also apply to other controllers.
Vents
Do not block any vents. To maintain good ventilation, follow
the guidelines below:
• Place the system at least 10 cm away from a wall surface.
• Do not place on a carpet or rug with long fibres.
• Do not place in a narrow or cramped space.
• Do not cover with cloth.
• Do not allow dust to build up on the vents.
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