A 150-pound person will burn 476 calories per hour during Walking up stairs, using or climbing up ladder, see CalorieLab to customize.
Dell Latitude E4300 Wireless Switch. So for everybody with the same problem, here comes the solution, on the Dell Latitude E4300, the wireless switch is located on the right side of the laptop, just under the only USB port of the machine. See picture of the Wireless Switch below:
Press the Fn key, normally located in the lower left corner of the keyboard next to the CTRL key, and the F11 key at the same time. Depending on the particular Dell laptop model, the F11 key may say Num Lock or may have an icon of a keypad. Use the numeric keypad the way you would on a full-size keyboard.