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Appendix B Care, Use, and Safety Information 67
Connectors and Ports
Never force a connector into a port. If the connector and port don’t join with
reasonable ease, they probably don’t match. Make sure that the connector matches the
port and that you have positioned the connector correctly in relation to the port.
Avoid Hearing Damage
Ergonomics
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 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.
Warning: Permanent hearing loss may occur if earbuds or headphones are used at
high volume. You can adapt over time to a higher volume of sound, which may sound
normal but can be damaging to your hearing. Set your iMac G5 volume to a safe level
before that happens. If you experience ringing in your ears, reduce the volume or
discontinue use of earbuds or headphones with your iMac G5.
Thighs tilted slightly
Shoulders relaxed
Screen positioned to avoid
reflected glare
Forearms and hands
in a straight line
Forearms level
or tilted slightly
Lower back supported
Feet flat on the floor
or on a footrest
Top of the screen at or slightly below
eye level (You may need to adjust the
height of your display by raising or
lowering your work surface.)
Clearance under work surface
45–70 cm (18–28 in.)