Power Supply; Super I/O; Uio - Supermicro H8DGU User Manual

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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 H8DGU(-F) serverboard requires the use of proprietary power supplies. Please
refer to the pinout information for the power connectors in Section 6 of Chapter 2
for detailed information on power requirements.
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.
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Super I/O

The Super I/O contains a data separator, write pre-compensation circuitry, decode
logic, data rate selection, a clock generator, drive interface control logic and interrupt
and DMA logic. The wide range of functions integrated onto the Super I/O greatly re-
duces the number of components required for interfacing with fl oppy disk drives.
The Super I/O provides two high-speed, 16550 compatible serial communication
ports (UARTs), one of which supports serial infrared communication. Each UART in-
cludes a 16-byte send/receive FIFO, a programmable baud rate generator, complete
modem control capability and a processor interrupt system. 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 Confi guration
and Power Interface), which includes support of legacy and ACPI power manage-
ment 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 fl exibly adjusted
to meet ISA PnP requirements, which support ACPI and APM (Advanced Power
Management).
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UIO

The H8DGU(-F) is a specially-designed serverboard that features Supermicro's
UIO (Universal I/O) technology. UIO serverboards have a PCI-Express x4 and
x8 signals that can support PCI-E cards or any one of several types of UIO card
types to add SAS ports, additional LAN ports, Infi niband®, etc. to the serverboard.
This allows the user to tailor the serverboard to their own needs.
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Chapter 1: Introduction