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H8QC8(+)/H8QCE(+) User’s Manual
1-5 Power
Supply
As with all computer products, a stable power source is necessary for proper and
reliable operation. It is even more important for processors that have high CPU
clock rates of 1 GHz and faster.
The H8QC8(+)/H8QCE(+) accommodates 12V ATX power supplies. Although
most power supplies generally meet the specifi cations required by the CPU, some
are inadequate. A 2 amp current supply on a 5V Standby rail is strongly recom-
mended.
It is strongly recommended that you use a high quality power supply that meets
12V ATX power supply Specifi cation 1.1 or above. Additionally, in areas where
noisy power transmission is present, you may choose to install a line fi lter to shield
the computer from noise. It is recommended that you also install a power surge
protector to help avoid problems caused by power surges.
Warning:
To prevent the possibility of explosion, do not use the wrong type of
onboard CMOS battery or install it upside down.
Wake-On-Ring Header (JWOR)
Wake-up events can be triggered by a device such as the external modem ringing
when the system is in the SoftOff state. Note that external modem ring-on can only
be used with an ATX 2.01 (or above) compliant power supply.
Recovery from AC Power Loss
BIOS provides a setting for you to determine how the system will respond when
AC power is lost and then restored to the system. You can choose for the system
to remain powered off (in which case you must hit the power switch to turn it back
on) or for it to automatically return to a power on state. See the Power Lost Con-
trol setting in the BIOS chapter of this manual to change this setting. The default
setting is Always OFF.
