Supermicro P4SGA+ User Manual download pdf (Page 23)

Chapter 1: Introduction

1-17

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 SUPER P4SGA/P4SGL/P4SGR/P4SGE accommodates 12V ATX power

supplies. Although most power supplies generally meet the specifications

required by the CPU, some are inadequate. You power supply must supply

1 amp of 5V standby voltage.

It is strongly recommended that you use a high quality power supply that

meets 12V ATX power supply Specification 1.1 or above. Additionally, in

areas where noisy power transmission is present, you may choose to in-

stall 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.

It also provides two high-speed, 16550 compatible serial communication

ports (UARTs), one of which supports serial infrared communication. Each

UART includes a 16-byte send/receive FIFO, a programmable baud rate

generator, complete modem control capability and a processor interrupt sys-

tem. Both UARTs provide legacy speed with baud rate of up to 115.2 Kbps

as well as an advanced speed with baud rates of 250 K, 500 K, or 1 Mb/s,

which support higher speed modems.

The Super I/O provides functions that comply with ACPI (Advanced Con-

figuration and Power Interface), which includes support of legacy and ACPI

power management through a SMI or SCI function pin. It also features auto

power management to reduce power consumption.

The IRQs, DMAs and I/O space resources of the Super I/O can be flexibly

adjusted to meet ISA PnP requirements, which suppport ACPI and APM (Ad-

vanced Power Management).

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Supermicro P4SGA+ User Manual Page 23