American Megatrends Super Voyager VLB-III, Руководство пользователя, Страница: 17 / 138

Super Voyager VLB-III ISA Motherboard User's Guide
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Compliance with EPA Green PC Specifications
To meet the Green PC specifications, a computer system must be able to enter an idle state (Sleep Mode)
that reduces the total system power use to 30 watts or less on the input - AC side. The monitor and printer
must also use no more than 30 watts.
Responsibility for Meeting Green PC Requirements
The system integrator is ultimately responsible for meeting all Green PC specifications and performing the
tests necessary to obtain Energy Star approval, because the motherboard is only one component in the
system. Other components have a major impact on system power use.
Green PC Hot Keys
A keyboard hot key is any multiple keystroke operation that causes the keyboard controller to execute a
complex system function transparent to the system operating system. The AMIBIOS system BIOS and the
American Megatrends MEGAKEY keyboard controller used in the Super Voyager VLB-III motherboard
provide several hot key features.
Because of the highly programmable nature of the MEGAKEY and the AMIBIOS, configuring the
functionality and keystroke assignments can be done by the OEM. After system BIOS POST (Power On
Self Test) completes, AMIBIOS initializes the MEGAKEY keyboard controller using values preset by the
OEM via AMIBCP (American Megatrends BIOS Configuration Program). The MEGAKEY supports hot
key control of: system security locking and system power down mode.
Using the Turbo LED
The Turbo LED indicates if the system is using low or high operating frequency. The Turbo LED should be
controlled by the same MEGAKEY I/O pin that controls the CPU clock switching. If the Turbo LED is on,
the system is operating at high operating frequency. If the Turbo LED is off, the system is at low operating
frequency.