Samsung NP940X5J-K01US - Manual (Page 106)

Appendix
106
Operating conditions
• Take at least a 10 minute break every hour.
• Avoid using the computer in dark locations. Use the
computer with as much ambient light as you would when
reading a book.
• Indirect illumination is recommended. Use a curtain to
prevent reflections and glare on the screen.
• While operating a computer and talking on the phone, use
a headset. Using the computer while holding a phone on your
shoulder or with your neck may lead to muscle strain or injury.
• Keep frequently used items within reach.
• Use the computer only within the temperature and
humidity ranges specified in this manual.