Users Manual

Change hand positions often to avoid fatigue. Some computer users might develop
discomfort in their hands, wrists, or arms after intensive work without breaks. If you begin
to develop chronic pain or discomfort in your hands, wrists, or arms, consult a qualified
health specialist.
External mouse. If you use an external mouse, position the mouse at the same height as
the keyboard and within a comfortable reach.
Chair. An adjustable chair that provides firm, comfortable support is best. Adjust the
height of the chair so your thighs are horizontal and your feet are flat on the floor. The
back of the chair should support your lower back (lumbar region). Follow the
manufacturer’s instructions for adjusting the backrest to fit your body properly.
Built-in display. Adjust the angle of the display to minimize glare and reflections from
overhead lights and windows. Do not force the display if you meet resistance. The display
is not designed to open past 135 degrees.
You can adjust the brightness of the screen when you take the computer from one work
location to another, or if the lighting in your work area changes.
For more information about ergonomics, see the Apple Support article .
Regulatory information
Regulatory information, certification, and compliance marks specific to MacBook Air are
available on-device. Choose Apple menu > About This Mac > Support > Regulatory
Certification.
FCC compliance statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
Ergonomics