Apple iMac (21.5-inch, Late 2011) - Manual (Page 66)

66 Chapter 5 Last, but Not Least
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.
You might have to raise your chair so that your forearms and hands are at the proper
angle to the keyboard. If this makes it impossible to rest your feet flat on the floor, use
a footrest with adjustable height and tilt to make up for any gap between the floor and
your feet. Or you can lower the desktop to eliminate the need for a footrest. Another
option is to use a desk with a keyboard tray that’s lower than the regular work surface.
More information about ergonomics is available on the web:
www.apple.com/about/ergonomics
Apple and the Environment
Apple Inc. recognizes its responsibility to minimize the environmental impact of its
operations and products.
More information is available on the web:
www.apple.com/environment