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Asus F2A55 2.5.3USB Configuration, 2.5.4NB Configuration, 2.5.5Onboard Devices Configuration

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2.5.3USB Configuration

The items in this menu allow you to change the USB-related features.

The USB Devices item shows the auto-detected values. If no USB device is detected, the item shows None.

Legacy USB Support [Enabled]

[Enabled]	Enables the support for USB devices on legacy operating systems (OS).
[Disabled]	The USB devices can be used only for the BIOS setup program.
[Auto]	Allows the system to detect the presence of USB devices at startup. If
	detected, the USB controller legacy mode is enabled. If no USB device is
	detected, the legacy USB support is disabled.

Legacy USB3.0 Support [Enabled]

[Enabled]	Enables the support for USB 3.0 devices on legacy operating systems
	(OS).
[Disabled]	Disables the function.

EHCI Hand-off [Disabled]

[Enabled]	Enables the support for operating systems without an EHCI hand‑off
	feature.
[Disabled]	Disables the function.

2.5.4NB Configuration

Dual Graphics [Disabled]

When this item is enabled, the add-on graphics devices’ performance can be greatly enhanced. Configuration options: [Enabled] [Disabled]

Primary Video Device [PCIE / PCI Video]

Selects the primary display device. Configuration options: [PCIE / PCI Video]

2.5.5Onboard Devices Configuration

HD Audio Device [Enabled]

[Enabled]	Enables the High Definition Audio Controller.
[Disabled]	Disables the controller.
	The following two items appear only when you set the HD Audio Device item to [Enabled].

Front Panel Type [HD]

Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or high- definition audio depending on the audio standard that the front panel audio module supports.

[HD]	Sets the front panel audio connector (AAFP) mode to high definition audio.
[AC97]	Sets the front panel audio connector (AAFP) mode to legacy AC’97.

Chapter 2: BIOS information

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Contents

Page Page Contents Page Page Electrical safety Operation safety How this guide is organized Where to find more information Conventions used in this guide Typography F2A55 specifications summary Page Page Package contents 1.1.1Product highlights 1.1.2ASUS DIGI+ VRM 1.1.3ASUS Exclusive Features Page 1.2Before you proceed 1.3.1Placement direction 1.3.2Screw holes 1.3.3Motherboard layout 1.3.4Layout contents 1.4.1APU installation 1.4.2APU heatsink and fan assembly installation Page 1.5.1Overview 1.5.2Memory configurations Page Page Page Page Page Page 1.5.3Installing a DIMM 1.6.1Installing an expansion card 1.6.2Configuring an expansion card 1.6.3PCI slots 1.6.4PCI Express x1 slots 1.6.5PCI Express x16 slots Page 1.7Jumpers 1.8.1Rear panel ports Page 1.8.2Internal connectors Page Page Page Page Page 1.9Onboard switch 1.10Onboard LEDs 1.11.1Installing an operating system 1.11.2Support DVD information Page 2.1.1ASUS Update utility 2.1.2ASUS EZ Flash 2.1.3ASUS CrashFree BIOS 3 utility 2.1.4ASUS BIOS Updater Page BIOS menu screen Page Page Page 2.3.1System Language [English] 2.3.2System Date [Day xx/xx/xxxx] 2.3.3System Time [xx:xx:xx] 2.3.4Security Page 2.4Ai Tweaker menu 2.4.1Ai Overclock Tuner [Auto] 2.4.2Memory Frequency [Auto] 2.4.3APU Multiplier [Auto] 2.4.4NB Frequency [Auto] 2.4.5EPU Power Saving Mode [Disabled] 2.4.6OC Tuner 2.4.7DRAM Timing Control 2.4.8CPU Voltage [Offset Mode] 2.4.9DRAM Voltage [Auto] 2.4.10SB 1.1V Voltage [Auto] 2.4.12APU1.2V Voltage [Auto] 2.4.13VDDA Voltage [Auto] 2.4.14DIGI+ VRM Page 2.5.1CPU Configuration 2.5.2SATA Configuration 2.5.3USB Configuration 2.5.4NB Configuration 2.5.5Onboard Devices Configuration 2.5.6APM 2.5.7Network Stack 2.6Monitor menu 2.6.1CPU Temperature / MB Temperature [xxxºC/xxxºF] 2.6.2CPU_FAN / CHA_FAN Speed [xxxx RPM] or [Ignore] / [N/A] 2.6.3CPU_FAN Q-FanControl [Enabled] 2.6.4CHA_FAN1/2 Q-FanControl [Disabled] 2.6.5CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage 2.6.6Anti Surge Support [Enabled] 2.7.1Bootup NumLock State [On] 2.7.2Full Screen Logo [Enabled] 2.7.3Fast Boot [Enabled] 2.7.4Post Delay Time [3 sec] 2.7.5Wait for ‘F1’ If Error [Enabled] 2.7.6Option ROM Messages [Force BIOS] 2.7.7Next boot after AC Power Loss [Normal Boot] 2.7.8CSM Parameters 2.7.9Security Boot parameters Page 2.7.10Setup Mode [EZ Mode] 2.7.11Boot Option Priorities 2.7.12Boot Override 2.8.1ASUS EZ Flash 2 Utility 2.8.2ASUS SPD Information 2.8.3ASUS O.C. Profile 2.9Exit menu Page Federal Communications Commission Statement IC: Canadian Compliance Statement Canadian Department of Communications Statement VCCI: Japan Compliance Statement VCCI Class B Statement KC: Korea Warning Statement REACH ASUSTeK COMPUTER INC ASUS COMPUTER INTERNATIONAL (America) ASUS COMPUTER GmbH (Germany and Austria)