Toshiba Portege Z930-F - Manual (Page 31)

When you connect the AC adaptor to the computer, always follow the
steps in the exact order as described in the User’s Manual.
Connecting the power cable to a live electrical outlet should be the last
step otherwise the adaptor DC output plug could hold an electrical
charge and cause an electrical shock or minor bodily injury when
touched. As a general safety precaution, avoid touching any metal
parts.
Never place your computer or AC adaptor on a wooden surface,
furniture, or any other surface that could be marred by exposure to
heat since the computer base and AC adaptor's surface increase in
temperature during normal use.
Always place your computer or AC adaptor on a flat and hard surface
that is resistant to heat damage.
Refer to the enclosed Instruction Manual for Safety and Comfort for
detailed precautions and handling instructions.
1. Connect the power cord to the AC adaptor.
Figure 2-1 Connecting the power cord to the AC adaptor (2-pin plug)
Figure 2-2 Connecting the power cord to the AC adaptor (3-pin plug)
Either a 2-pin or 3-pin adaptor/cord will be included with the computer
depending on the model.
User's Manual 2-4