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. 2 X12-29435-03_Mnl_Product_Guide_w2 2 10/3/2006 11:13:39 AM To select an appropriate power source for your device: Use only the power supply unit and AC power cord that came with your device or that you received from an authorized repair center. Confirm that your electrical outlet provides the type of power indicated on the power supply unit (in terms of voltage [V] and frequency [Hz]). If you are not sure of the type of power supplied to your home, consult a qualified electrician. Do not use non-standard power sources, such as generators or inverters, even if the voltage and frequency appear acceptable. Only use AC power provided by a standard wall outlet. Do not overload your wall outlet, extension cord, power strip, or other electrical receptacle. Confirm that they are rated to handle the total current (in amps [A]) drawn by the device (indicated on the power supply unit) and any other devices that are on the same circuit. To avoid damaging the power cords and power supply: Protect the power cords from being walked on. Protect cords from being pinched or sharply bent, particularly where they connect to the power outlet, the power supply unit, and the device. Do not jerk, knot, sharply bend, or otherwise abuse the power cords. Do not expose the power cords to sources of heat. Keep children and pets away from the power cords. Do not allow them to bite or chew on them. When disconnecting the power cords, pull on the plug--do not pull on the cord...