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• Page 1
  A520I AC User’s Manual Rev. 1201 For more product details, please visit GIGABYTE’s website. To reduce the impacts on global warming, the packaging materials of this product are recyclable and reusable. GIGABYTE works with you to protect the environment.
• Page 2
  The trademarks mentioned in this manual are legally registered to their respective owners. Disclaimer Information in this manual is protected by copyright laws and is the property of GIGABYTE. Changes to the specifications and features in this manual may be made by GIGABYTE without prior notice.

• Page 3: Table Of Contents

  Table of Contents A520I AC Motherboard Layout ………………4 Chapter 1 Hardware Installation ………………5 Installation Precautions ………………5 Product Specifications ………………6 Installing the CPU ……………….. 9 Installing the Memory ………………9 Installing an Expansion Card …………….. 10 Back Panel Connectors ……………… 10 Internal Connectors ………………

• Page 4: A520I Ac Motherboard Layout

  A520I AC Motherboard Layout CPU_FAN Socket AM4 ATX_12V DP_HDMI U32_2 HDMI1 SPEAKER U32_1 Realtek QFLED ® SATA3 QFLASH_PLUS USB_LAN Super I/O ® M_BIOS M2A_CPU F_U32 CLR_CMOS M2_WIFI A520 LED_C AUDIO SYS_FAN2 F_USB1 PCIEX16 SYS_FAN1 F_AUDIO CODEC Box Contents 5 A520I AC Motherboard…

• Page 5: Chapter 1 Hardware Installation

  Chapter 1 Hardware Installation Installation Precautions The motherboard contains numerous delicate electronic circuits and components which can become damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user’s manual and follow these procedures: • Prior to installation, make sure the chassis is suitable for the motherboard. •…

• Page 6: 1-2 Product Specifications

  Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules Š Support for Extreme Memory Profile (XMP) memory modules Š (Go to GIGABYTE’s website for the latest supported memory speeds and memory modules.) Onboard Integrated in the 3rd Generation AMD Ryzen with Radeon Graphics ™…

• Page 7
  Integrated in the CPU: Š 4 x USB 3.2 Gen 1 ports on the back panel Chipset: Š 2 x USB 3.2 Gen 1 ports available through the internal USB header 4 x USB 2.0/1.1 ports (2 ports on the back panel, 2 ports available through the internal USB header) Internal 1 x 24-pin ATX main power connector…
• Page 8
  System Form Factor Mini-ITX Form Factor; 17.0cm x 17.0cm Š * GIGABYTE reserves the right to make any changes to the product specifications and product-related information without prior notice. Please visit the Support\Utility List Please visit GIGABYTE’s website for support lists of CPU, memory page on GIGABYTE’s website to modules, SSDs, and M.2 devices.

• Page 9: Installing The Cpu

  • Make sure that the motherboard supports the memory. It is recommended that memory of the same capacity, brand, speed, and chips be used. (Go to GIGABYTE’s website for the latest supported memory speeds and memory modules.) • Always turn off the computer and unplug the power cord from the power outlet before installing the memory to prevent hardware damage.

• Page 10: Installing An Expansion Card

  The two memory sockets are divided into two channels and each channel has one memory socket as following: Channel A: DDR4_A1 Channel B: DDR4_B1 Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode. Dual Channel mode cannot be enabled if only one memory module is installed.

• Page 11
  Please visit GIGABYTE’s website for details on configuring the audio software. (Note 1) For 3rd Generation AMD Ryzen with Radeon Graphics processors only. ™ ™ (Note 2) To enable the Q-Flash Plus function please visit the «Unique Features» webpage of GIGABYTE’s website. — 11 -…

• Page 12: Internal Connectors

  Internal Connectors ATX_12V F_AUDIO SPEAKER CPU_FAN F_U32 SYS_FAN1/2 F_USB D_LED LED_C SATA3 0/1/2/3 CLR_CMOS M2A_CPU F_PANEL Read the following guidelines before connecting external devices: • First make sure your devices are compliant with the connectors you wish to connect. • Before installing the devices, be sure to turn off the devices and your computer. Unplug the power cord from the power outlet to prevent damage to the devices.

• Page 13
  1/2) ATX_12V/ATX (2×4 12V Power Connector and 2×12 Main Power Connector) With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, first make sure the power supply is turned off and all devices are properly installed.
• Page 14
  LED strip. For how to turn on/off the lights of the LED strip please visit the «Unique Features» webpage of GIGABYTE’s website. Before installing the devices, be sure to turn off the devices and your computer. Unplug the power cord from the power outlet to prevent damage to the devices.
• Page 15
  DEBUG PORT 7) SATA3 0/1/2/3 (SATA 6Gb/s Connectors) The SATA connectors conform to SATA 6Gb/s standard and are compatible with SATA 3Gb/s and SATA 1.5Gb/s standard. Each SATA connector supports a single SATA device. The SATA connectors support RAID 0, RAID 1, and RAID 10. Refer to Chapter 3, «Configuring a RAID Set,» for instructions on configuring a RAID array.
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  9) F_PANEL (Front Panel Header) Connect the power switch, reset switch, and system status indicator on the chassis to this header according to the pin assignments below. Note the positive and negative pins before connecting the cables. RES+ Power Switch Reset Switch RES- PLED-…
• Page 17
  11) SPEAKER (Speaker Header) Connects to the speaker on the chassis front panel. The system reports system startup status by issuing a beep code. One single short beep will be heard if no problem is detected at system startup. Pin No. Definition SPK- F_USB30 F_ U…
• Page 18
  14) COM (Serial Port Header) The COM header can provide one serial port via an optional COM port cable. For purchasing the optional COM port cable, please contact the local dealer. Pin No. Definition Pin No. Definition NDCD- NDSR- 1 2 3 NSIN NRTS- NSOUT…
• Page 19
  17) BAT (Battery) The battery provides power to keep the values (such as BIOS configurations, date, and time information) in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low level, or the CMOS values may not be accurate or may be lost. You may clear the CMOS values by removing the battery: 1.

• Page 20: Chapter 2 Bios Setup

  To access the BIOS Setup program, press the <Delete> key during the POST when the power is turned on. 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.

• Page 21: The Main Menu

  The Main Menu System Setup Menus Time Configuration Items Hardware Information Option Description Current Settings Quick Access Bar allows you to quickly move to the General Help, Easy Mode, Smart Fan 5, or Q-Flash screen. Advanced Mode Function Keys <f><g> Move the selection bar to select a setup menu <h><i>…

• Page 22: Favorites (F11)

  Favorites (F11) Set your frequently used options as your favorites and use the <F11> key to quickly switch to the page where all of your favorite options are located. To add or remove a favorite option, go to its original page and press <Insert>…

• Page 23: Tweaker

  Tweaker Whether the system will work stably with the overclock/overvoltage settings you made is dependent on your overall system configurations. Incorrectly doing overclock/overvoltage may result in damage to CPU, chipset, or memory and reduce the useful life of these components. This page is for advanced users only and we recommend you not to alter the default settings to prevent system instability or other unexpected results.

• Page 24
  & PPC Adjustment (Note 1) Allows you to fix the PState of the CPU. (Default: PState 0) & Global C-state Control (Note 1) Allows you to determine whether to let the CPU enter C states. When enabled, the CPU core frequency will be reduced during system halt state to decrease power consumption.
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  ƒ SPD Info Displays information on the installed memory. & CPU Vcore/Dynamic Vcore(DVID)/VCORE SOC/Dynamic VCORE SOC(DVID)/CPU VDD18/ CPU VDDP/A_VDD18S5/DRAM Voltage (CH A/B)/DDRVPP Voltage (CH A/B)/DRAM Termination (CH A/B) These items allow you to adjust the CPU Vcore and memory voltages. ƒ…

• Page 26: Settings

  Settings ƒ Platform Power & AC BACK Determines the state of the system after the return of power from an AC power loss. The system returns to its last known awake state upon the return of the AC power. Memory Always On The system is turned on upon the return of the AC power.

• Page 27
  ƒ IO Ports & Initial Display Output Specifies the first initiation of the monitor display from the installed PCI Express graphics card or the onboard graphics. IGD Video Sets the onboard graphics as the first display. (Note) PCIe 1 Slot Sets the graphics card on the PCIEX16 slot as the first display.
• Page 28
  ƒ USB Configuration & Legacy USB Support Allows USB keyboard/mouse to be used in MS-DOS. (Default: Enabled) & XHCI Hand-off Determines whether to enable XHCI Hand-off feature for an operating system without XHCI Hand-off support. (Default: Enabled) & USB Mass Storage Driver Support Enables or disables support for USB storage devices.
• Page 29
  & IPv6 HTTP Support Enables or disables HTTP boot support for IPv6. This item is configurable only when Network Stack is enabled. & PXE boot wait time Allows you to configure how long to wait before you can press <Esc> to abort the PXE boot. This item is configurable only when Network Stack is enabled.
• Page 30
  ƒ Smart Fan 5 & Monitor Allows you to select a target to monitor and to make further adjustment. (Default: CPU FAN) & Fan Speed Control Allows you to determine whether to enable the fan speed control function and adjust the fan speed. Allows the fan to run at different speeds according to the temperature.

• Page 31: System Info

  System Info. This section provides information on your motherboard model and BIOS version. You can also select the default language used by the BIOS and manually set the system time. & System Language Selects the default language used by the BIOS. &…

• Page 32: Boot

  System (Default) & Full Screen LOGO Show Allows you to determine whether to display the GIGABYTE Logo at system startup. Disabled skips the GIGABYTE Logo when the system starts up. (Default: Enabled) & Fast Boot Enables or disables Fast Boot to shorten the OS boot process. Ultra Fast provides the fastest bootup speed.

• Page 33
  & VGA Support Allows you to select which type of operating system to boot. Enables legacy option ROM only. Auto EFI Driver Enables EFI option ROM. (Default) This item is configurable only when Fast Boot is set to Enabled or Ultra Fast. &…
• Page 34
  & User Password Allows you to configure a user password. Press <Enter> on this item, type the password, and then press <Enter>. You will be requested to confirm the password. Type the password again and press <Enter>. You must enter the administrator password (or user password) at system startup and when entering BIOS Setup.

• Page 35: Save & Exit

  Save & Exit & Save & Exit Setup Press <Enter> on this item and select Yes. This saves the changes to the CMOS and exits the BIOS Setup program. Select No or press <Esc> to return to the BIOS Setup Main Menu. &…

• Page 36: Chapter 3 Appendix

  Chapter 3 Appendix 3-1 Configuring a RAID Set RAID Levels RAID 0 RAID 1 RAID 10 Minimum Number of ≥2 Hard Drives Number of hard drives * Size of the smallest drive (Number of hard drives/2) * Array Capacity Size of the smallest drive Size of the smallest drive Fault Tolerance Before you begin, please prepare the following items:…

• Page 37
  4. Select AMD-RAID Bottom Device first and click Next to load the driver. Then select AMD-RAID Controller and click Next to load the driver. Finally, continue the OS installation. Please visit GIGABYTE’s website for details on configuring a RAID array. — 37 -…

• Page 38: Drivers Installation

  You can click the Xpress Install button and «Xpress Install» will install all of the selected drivers. Or click the arrow icon to individually install the drivers you need. Please visit GIGABYTE’s website for more software information. Please visit GIGABYTE’s website for more troubleshooting information. — 38 -…

• Page 39: Regulatory Notices

  Supplier’s Declaration of Conformity 47 CFR § 2.1077 Compliance Information Product Name: Motherboard Trade Name: GIGABYTE Model Number: A520I AC Responsible Party – U.S. Contact Information: G.B.T. Inc. Address: 17358 Railroad street, City Of Industry, CA91748 Tel.: 1-626-854-9338 Internet contact information: https://www.gigabyte.com FCC Compliance Statement: This device complies with Part 15 of the FCC Rules, Subpart B, Unintentional Radiators.

• Page 40
  European Commission Delegated Directive (EU) 2015/863 Statement Este producto que llevan la marca CE cumplen con las siguientes GIGABYTE products have not intended to add and safe from hazardous Directivas de la Unión Europea: Directiva EMC (2014/30/EU), Directiva substances (Cd, Pb, Hg, Cr+6, PBDE, PBB, DEHP, BBP, DBP and DIBP).
• Page 41
  «REV:1.0» means the revision of the motherboard is 1.0. . Motherboard revision no.: Wireless module manufacturer, model name: A520I AC rev. 1.0 Intel Corporation 3168NGW ® A520I AC rev. rev. 1.1 Intel Corporation 9260NGW ® A520I AC rev. rev. 1.2 Intel Corporation 3168NGW ®…

• Page 42: Contact Us

  Contact Us GIGA-BYTE TECHNOLOGY CO., LTD. Address: No.6, Baoqiang Rd., Xindian Dist., New Taipei City 231, Taiwan TEL: +886-2-8912-4000, FAX: +886-2-8912-4005 Tech. and Non-Tech. Support (Sales/Marketing) : https://esupport.gigabyte.com WEB address (English): https://www.gigabyte.com WEB address (Chinese): https://www.gigabyte.com/tw GIGABYTE eSupport • To submit a technical or non-technical (Sales/Marketing) question, please link to: https://esupport.gigabyte.com…

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