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H8DMU+ 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.
The H8DMU+ accommodates 12V ATX power supplies. Although most power sup-
plies generally meet the specifi cations required by the CPU, some are inadequate.
Important:
a 3A or greater current supply on the 5V Standby rail is required.
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.
