Gigabyte GA-P55A-UD6 User Manual

- 35 - BIOS Setup
BIOS (Basic Input and Output System) records hardware parameters of the system in the CMOS on the
motherboard. Its major functions include conducting the Power-On Self-Test (POST) during system startup,
saving system parameters and loading operating system, etc. BIOS includes a BIOS Setup program that
allows the user to modify basic system conguration settings or to activate certain system features. When
the power is turned off, the battery on the motherboard supplies the necessary power to the CMOS to keep
the conguration values in the CMOS.
To access the BIOS Setup program, press the <Delete> key during the POST when the power is turned on.
To see more advanced BIOS Setup menu options, you can press <Ctrl> + <F1> in the main menu of the
BIOS Setup program.
To upgrade the BIOS, use either the GIGABYTE Q-Flash or @BIOS utility.
• Q-Flash allows the user to quickly and easily upgrade or back up BIOS without entering the operating
system.
• @BIOS is a Windows-based utility that searches and downloads the latest version of BIOS from the
Internet and updates the BIOS.
For instructions on using the Q-Flash and @BIOS utilities, refer to Chapter 4, "BIOS Update Utilities."
Chapter 2 BIOS Setup
• Because BIOS ashing is potentially risky, if you do not encounter problems using the current
version of BIOS, it is recommended that you not ash the BIOS. To ash the BIOS, do it with
caution. Inadequate BIOS ashing may result in system malfunction.
• BIOS will emit a beep code during the POST. Refer to Chapter 5, "Troubleshooting," for the beep
codes description.
• It is recommended that you not alter the default settings (unless you need to) to prevent system
instability or other unexpected results. Inadequately altering the settings may result in system's
failure to boot. If this occurs, try to clear the CMOS values and reset the board to default values.
(Refer to the "Load Optimized Defaults" section in this chapter or introductions of the clearing
CMOS button/battery in Chapter 1 for how to clear the CMOS values.)

Gigabyte GA-P55A-UD6 Specifications

General

Memory voltage	1.5 V
Number of memory slots	6
Maximum internal memory	16 GB
Processor socket	LGA 1156 (Socket H)
Processor manufacturer	Intel
USB 2.0 connectors	2
Power fan connector	Yes
Number of SATA connectors	8
AGP x8 slots	0
Special features	@BIOS Q-Flash Xpress BIOS Rescue Download Center Xpress Install Xpress Recovery2
Controller interface type	iTE IT8720
Controller 2nd interface type	ATA-133/100/66/33
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Audio chip	Realtek ALC889
Motherboard chipset	Intel® P55
Audio output channels	7.1 channels
Motherboard form factor	ATX
Compatible operating systems	Win XP, Vista, 7
PCI Express x16 slots	3
RAID levels	0, 1, 10
Bundled software	Norton Internet Security
Networking features	10/100/1000 Mbit
BIOS memory size	32 Mbit

Weight and Dimensions

Depth	244 mm
Width	305 mm