Chapter 1: Overview
1-5 ACPI Features
ACPI stands for Advanced Configuration and Power Interface. The ACPI specifica- tion defines a flexible and abstract hardware interface that provides a standard way to integrate power management features throughout a PC system, including its hardware, operating system and application software. This enables the system to automatically turn on and off peripherals such as CD-ROMs, network cards, hard disk drives and printers.
In addition to operating_system-directed power management, ACPI also provides a generic system event mechanism for Plug and Play, and an operating system- independent interface for configuration control. ACPI leverages the Plug and Play BIOS data structures, while providing a processor architecture-independent imple- mentation that is compatible with Windows 7, Windows Vista and Windows 2008 Operating Systems.
Slow Blinking LED for Suspend-State Indicator
When the CPU goes into a suspend state, the chassis power LED will start blinking to indicate that the CPU is in suspend mode. When the user presses any key, the CPU will "wake up," and the LED will automatically stop blinking and remain on.
1-6 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 X9DRG-HF/X9DRG-HTF motherboard supports SMC-Proprietary 62-pin, 38- pin, 20-pin power connectors and 12V 8-pin/4-pin power connectors. In areas where noisy power transmission is present, you may choose to install a line filter 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.
Note: Please use SMC-proprietary power supply as specified as above. This motherboard does not support any power supply manufactured by other manufacturer.
1-7 Super I/O
The Super I/O supports one high-speed, 16550 compatible serial communication header (UART). The UART includes a 16-byte send/receive FIFO, a programmable baud rate generator, complete modem control capability, and a processor interrupt system. The UART provides legacy speed with baud rate of up to 115.2 Kbps.
