ASUS PRIME B840-PLUS WIFI (90MB1IZ0-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. PRIME B840-PLUS WIFI specifications summaryp. 9

   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. 13
5. Chapter 1: Product Introductionp. 14

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

6. 1.1 Before you proceedp. 14

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

7. 1.2 Motherboard layoutp. 15
8. 1.3 CPU installationp. 23

   CAUTION! • The AM5 socket has a different pinout design. Ensure that you use a CPU designed for the AM5 socket. • The CPU fits in only one correct orientation.…

9. 1.4 DIMM installationp. 24

   CAUTION! A DDR5 memory module is notched differently from a DDR, DDR2, DDR3, or DDR4 module. DO NOT install a DDR, DDR2, DDR3, or DDR4 memory module to the…

10. 1.5 M.2 module installationp. 26

    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…

11. 1.6 ASUS WiFi Q-Antenna installationp. 29

    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…

12. 1.7 BIOS FlashBack™p. 30

    NOTE: The illustrations for this section are for reference only. BIOS FlashBack™ allows you to easily update the BIOS without entering the existing BIOS or…

13. Chapter 2: BIOS and RAID Supportp. 31

    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…

14. 2.1 Knowing UEFI BIOSp. 31

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

15. 2.2 ASUS EZ Flash 3p. 32

    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…

16. 2.3 ASUS CrashFree BIOS 3p. 33

    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…

17. 2.4 RAID configurationsp. 34

    The motherboard supports RAID configurations. RAID definitions Volume provides the ability to link-together storage from one or several disks, regardless of…

18. Appendixp. 35

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

19. General noticesp. 35

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

20. Notices for Wi-Fi modelp. 38

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

21. Warrantyp. 46

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

22. ASUS contact informationp. 49

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

23. Service and supportp. 49

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

24. Product registerp. 49

    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…