User's Manual

5
Keyboard and Mouse Devices
Health Warning
Use of a keyboard or mouse may be linked to serious injuries or disorders.
When using a computer, as with many activities, you may experience occasional discomfort in your hands,
arms, shoulders, neck, or other parts of your body. However, if you experience symptoms such as persistent
or recurring discomfort, pain, throbbing, aching, tingling, numbness, burning sensation, or stiffness,
DO NOT IGNORE THESE WARNING SIGNS. PROMPTLY SEE A QUALIFIED HEALTH PROFESSIONAL,
even if symptoms occur when you are not working at your computer. Symptoms like these can be associated
with painful and sometimes permanently disabling injuries or disorders of the nerves, muscles, tendons, or
other parts of the body. These musculoskeletal disorders (MSDs) include carpal tunnel syndrome, tendonitis,
tenosynovitis, and other conditions.
While researchers are not yet able to answer many questions about MSDs, there is general agreement that
many factors may be linked to their occurrence, including: overall health, stress and how one copes with it,
medical and physical conditions, and how a person positions and uses his or her body during work and other
activities (including use of a keyboard or mouse). The amount of time a person performs an activity may also
be a factor.
Some guidelines that may help you work more comfortably with your computer and possibly reduce your
risk of experiencing an MSD can be found in the “Healthy Computing Guide” installed with this device’s
software. If this device did not come with software, you can access the “Healthy Computing Guide” at
www.microsoft.com/hardware or (in the United States only) by calling [phone] to request a CD at
no charge.
If you have questions about how your own lifestyle, activities, or medical, or physical condition may be
related to MSDs, see a qualied health professional.
Devices with Laser Pointers
Caution Use of controls or adjustments, or performance of procedures other than those specied herein
may result in hazardous radiation exposure.
● Do not stare into beam.
● Do not shine a laser pointer at anyone. Laser pointers are designed to illuminate inanimate objects.
● Do not allow minors to use a pointer unsupervised. Laser pointers are not toys.
● Do not point a laser pointer at a mirror-like (reective) surface. A reected beam can act like a direct
beam on the eye.
● Do not disassemble the device.
● Do not use the device outside of its specied operating temperature range +41ºF (+5ºC) to +95ºF
(+35ºC). If the device is exposed to an environment outside of its prescribed operation, turn off
the device and allow the temperature to stabilize within the specied operating range before using
the device.
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