Power Supply; Serial Port - Supermicro C9X299 User Manual

In addition to enabling 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 implementation that is compatible with
Windows® 7, Windows 8, and Windows 2012 Operating Systems.

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 C9X299-PG300F motherboard accommodates a 24-pin ATX power supply. Although most
power supplies generally meet the specifications required by the CPU, some are inadequate.
In addition, a 12V 8-pin power connection is also required to ensure adequate power supply
to the system.
Warning: To prevent damage to the power supply or the motherboard, use power
supplies that contain 24-pin and 8-pin power connectors. Connect the power supplies
to the 24-pin (JPW1) and the 8-pin power connectors (JPW2/JPW3) on the mother-
board. Failure in doing so may void the manufacturer warranty on your power supply
and motherboard.
It is strongly recommended that you use a high quality power supply that meets ATX power
supply Specification 2.02 or above. It must also be SSI compliant. For more information,
please refer to the website at http://www.ssiforum.org/. Additionally, in areas where noisy
power transmission is present, you may choose to install a line filter to shield the computer
from noises. It is recommended that you also install a power surge protector to help avoid
problems caused by power surges.

1.7 Serial Port

The C9X299-PG300F motherboard supports one serial communication connection. COM1
header can be used for input/output. The UART provides legacy speeds with a 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 high-speed serial communication devices.
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Chapter 1: Introduction