Asus P1-AH1 - Manual (Page 41)

2-25 ASUS Pundit P1-AH1
2.12 Power supply unit information
The system comes with a 250 W power supply unit (PSU).
2.12.1 Voltage selector
The PSU has a 115 V/230 V voltage selector switch located beside the
power socket. Use this switch to select the appropriate voltage according
to the voltage supply in your area.
Setting the switch to 115 V in a 230 V environment will seriously
damage the system!
The voltage selector is set to 230 V by default.
If the voltage supply in your
area is 100-127 V, set the
switch to 115 V.
If the voltage supply in your
area is 200-240 V, set the
switch to 230 V.