ASUS ROG STRIX B850-A GAMING WIFI (90MB1J50-M0EAY0) user manual

Contents

1. Safety informationp. 4

   Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or…

2. About this guidep. 6

   This user guide contains the information you need when installing and configuring the motherboard. How this guide is organized This guide contains the…

3. ROG STRIX B850-A GAMING WIFI specifications summaryp. 8

   CPU AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors* * Refer to https://www.asus.com/support/download-center/ for CPU support list.…

4. Connectors with shared bandwidthp. 14
5. Chapter 1: Product Introductionp. 15

   CAUTION! • Unplug the power cord from the wall socket before touching any component. • Before handling components, use a grounded wrist strap or touch a safely…

6. 1.1 Before you proceedp. 15

   Take note of the following precautions before you install motherboard components or change any motherboard settings.

7. 1.2 Motherboard layoutp. 16
8. 1.3 Motherboard rear and audio connectionsp. 31
9. Chapter 2: Basic Setupp. 36

   NOTE: The installation diagrams in this section are for reference only. The motherboard layout may vary with models, but the installation steps are the same…

10. 2.1 CPU installationp. 36

    CAUTION! • Ensure that you use a CPU designed for the AM5 socket. The CPU fits in only one correct orientation. DO NOT force the CPU into the socket to prevent…

11. 2.2 DIMM installationp. 39
12. 2.3 M.2 module installationp. 40

    NOTE: • The illustrations only show the installation steps for selected M.2 slots, the steps are the same for the other M.2 slots. • Use a Phillips screwdriver…

13. 2.4 Motherboard installationp. 48

    1. (on selected models) Install the bundled I/O Shield to the chassis rear I/O panel. NOTE: Only install the I/O Shield if your motherboard does not have a…

14. 2.5 ASUS WiFi Q-Antenna installationp. 49

    Installing the ASUS WiFi Q-Antenna Connect the bundled ASUS WiFi Q-Antenna connector to the Wi-Fi ports at the back of the chassis. CAUTION! • Ensure to hold…

15. 2.6 BIOS FlashBack™p. 50

    BIOS FlashBack™ allows you to easily update the BIOS without entering the existing BIOS or operating system. To use BIOS FlashBack™: 1. Visit…

16. 2.7 Clear CMOS buttonp. 51

    The Clear CMOS button located on the rear I/O allows you to clear the Real Time Clock (RTC) RAM in the CMOS, which contains the date, time, system passwords…

17. 2.8 Starting up for the first timep. 52

    1. After making all the connections, replace the system case cover. 2. Ensure that all switches are off. 3. Connect the power cord to the power connector at…

18. 2.10 Turning off the computerp. 52

    While the system is ON, press the power button for less than four seconds to put the system on sleep mode or soft-off mode, depending on the BIOS setting.…

19. Chapter 3: BIOS and RAID Supportp. 53

    NOTE: For more details on BIOS and RAID configurations, please refer to Manual & Document under the Support tab of the product information site, or visit…

20. 3.1 Knowing UEFI BIOSp. 53

    BIOS (Basic Input and Output System) stores system hardware settings such as storage device configuration, overclocking settings, advanced power management…

21. 3.2 ASUS EZ Flash 3p. 54

    The ASUS EZ Flash 3 feature allows you to update the BIOS without using an OS‑based utility. IMPORTANT! Ensure to load the BIOS default settings to ensure…

22. 3.3 ASUS CrashFree BIOS 3p. 55

    The ASUS CrashFree BIOS 3 utility is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating…

23. 3.4 RAID configurationsp. 56

    The motherboard supports RAID configurations, which vary depending on the CPU type as shown below: Ryzen™ 9000 Series Processors: RAID 0/1/5/10 Ryzen™ 8000…

24. Appendixp. 57

    General notices FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538, USA Phone / Fax No…

25. General noticesp. 57

    FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538, USA Phone / Fax No: (510)739-3777 /…

26. Notices for Wi-Fi modelp. 60

    Compliance Statement of Innovation, Science and Economic Development Canada (ISED) This device complies with Innovation, Science and Economic Development…

27. Warrantyp. 68

    EN: ASUS Guarantee Information • ASUS offers a voluntary manufacturer’s Commercial Guarantee. • ASUS reserves the right to interpret the provisions of the ASUS…

28. ASUS contact informationp. 71

    ASUSTeK COMPUTER INC. Address: 1F., No. 15, Lide Rd., Beitou Dist., Taipei City 112 https://qr.asus.com/ProductSafety ASUS COMPUTER INTERNATIONAL (America)…

29. Service and supportp. 71

    Visit our multi-language website at https://www.asus.com/support

30. Product registerp. 71

    Log in and register your device for better product support. ASUS contact information ASUSTeK COMPUTER INC. Address: 1F., No. 15, Lide Rd., Beitou Dist., Taipei…