Download
Share
Print this page
Asus PRIME B840M-A User Manual
  1. Manuals
  2. Brands
  3. Asus Manuals
  4. Motherboard
  5. PRIME B840M-A
  6. User manual
Asus PRIME B840M-A User Manual

Asus PRIME B840M-A User Manual

Hide thumbs

Advertisement

Quick Links

Download this manual
PRIME
B840M-A

Advertisement

loading
Need help?

Need help?

Do you have a question about the PRIME B840M-A and is the answer not in the manual?

Questions and answers

Related Manuals for Asus PRIME B840M-A

Summary of Contents for Asus PRIME B840M-A

  • Page 1 PRIME B840M-A...
  • Page 2 Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.
  • Page 3 Contents Safety information ....................... 4 About this guide ......................6 Package contents ......................8 PRIME B840M-A specifications summary ..............9 Chapter 1: Product Introduction Before you proceed ..................13 Motherboard layout..................14 1.2.1 Layout contents ................16 1.2.2 Rear I/O connection ..............21 1.2.3...
  • Page 4 Safety information Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.
  • Page 5 Button/Coin Batteries Safety Information Remove and immediately recycle or dispose of used batteries according to local regulations and keep out of reach of children. Do not incinerate or dispose of batteries in household trash. If ingested or inserted inside any part of the body, call a local poison control center for treatment information.
  • Page 6 Refer to the following sources for additional information and for product and software updates. ASUS website The ASUS website (www.asus.com) provides updated information on ASUS hardware and software products. Optional documentation Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer.
  • Page 7 RAID Configuration Guide Please visit https://www.asus.com/support for more information on the RAID Configuration Guide. BIOS FlashBack™ Feature Please visit https://www.asus.com/support for more information on the BIOS FlashBack™ Feature. Conventions used in this guide To ensure that you perform certain tasks properly, take note of the following notes used throughout this user guide.
  • Page 8 Package contents Check your motherboard package for the following items. Motherboard 1 x PRIME B840M-A motherboard Cables 2 x SATA 6Gb/s cables 1 x M.2 rubber package Miscellaneous 2 x Screw packages for M.2 SSD Documentation 1 x Quick start guide NOTE: •...
  • Page 9 PRIME B840M-A specifications summary 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. Chipset AMD B840 Chipset 4 x DIMM slots, max. 192GB, DDR5 Support up to 7600+MT/s (OC) with Ryzen™ 9000 & 8000 & 7000 Series...
  • Page 10 PRIME B840M-A specifications summary AMD RAIDXpert2 Technology Ryzen™ 9000 Series Processors: RAID 0/1/5/10 Storage Ryzen™ 8000 Series Processors: RAID 0/1 Ryzen™ 7000 Series Processors: RAID 0/1/10 1 x Realtek 2.5Gb Ethernet Ethernet ASUS LANGuard Rear USB (Total 7 ports) 2 x USB 10Gbps ports (2 x Type-A) 1 x USB 5Gbps port (1 x USB Type-C ®...
  • Page 11 PRIME B840M-A specifications summary Storage Related 3 x M.2 slots (Key M) 4 x SATA 6Gb/s ports 1 x USB 5Gbps connector (supports USB Type-C ® 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports...
  • Page 12 Operating System Windows 11, Windows 10 64-bit micro-ATX Form Factor Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm) NOTE: Specifications are subject to change without notice. Please refer to the ASUS website for the latest specifications.
  • Page 13 Chapter 1: Product Introduction Product Introduction Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. 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 grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity.
  • Page 14 Motherboard layout Top view CPU_FAN CPU_OPT CPU_12V HDMI_DP1 U5G_C3 SOCKET AM5 USB_5_1_2_12 LAN_U10G_4_7 M.2_1(SOCKET3) 2280 AUDIO CHA_FAN1 PCIEX16(G4) B840 BATTERY M.2_2(SOCKET3) PCIEX16(G3)_1 2242 2260 2280 PCIEX16(G3)_2 CLRTC CHA_FAN2 USB_E12 USB_1415 ADD_GEN 2_3 F_AUDIO SATA6G_4 SATA6G_3 SATA6G_2 SATA6G_1 SPDIF_OUT F_PANEL...
  • Page 15 Bottom view M.2_3(SOCKET3) 2280...
  • Page 16 M.2 X16 series card is installed. • For more details on the PCIe bifurcation, you may visit the support site at https://www.asus.com/support/FAQ/1037507/. • Adjust the PCIe bifurcation under BIOS settings. • Enable the Hyper M.2 X16 series card under BlOS settings.
  • Page 17 NOTE: • When connecting a single CPU fan, you may connect it to either the CPU_FAN or CPU_OPT header. • When connecting two CPU fans, ensure to connect the fans to the CPU_FAN and the CPU_ OPT header, and make sure both fans are the same brand and model. Header Max.
  • Page 18 7. SATA 6Gb/s port The SATA 6Gb/s port allows you to connect SATA devices such as optical disc drives and hard disk drives via a SATA cable. 8. USB 5Gbps Type-C Front Panel connector ® The USB 5Gbps Type-C connector allows you to connect a ®...
  • Page 19 12. Clear CMOS header The Clear CMOS header allows you to clear the Real Time Clock (RTC) RAM in the CMOS, which contains the date, time, system passwords, and system setup parameters. To erase the RTC RAM: Turn OFF the computer and unplug the power cord. Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds.
  • Page 20 17. Front Panel System header The Front Panel System header supports several chassis-mounted functions. • System power LED header (+PWR_LED-) The 2-pin header allows you to connect the System power LED. The System power LED lights up when the system is connected to a power source, or when you turn on the system power, and blinks when the system is in sleep mode.
  • Page 21 1.2.2 Rear I/O connection Rear panel connectors DisplayPort USB 2.0 port 5 with BIOS FlashBack™ feature Realtek 2.5Gb Ethernet port* HDMI™ port BIOS FlashBack™ button USB 5Gbps Type-C port C3 ® USB 2.0 ports 1, 2, and 12 USB 10Gbps (Teal blue) Type-A ports 4 and 7 Audio jacks** * and **: Refer to the tables under LAN port LEDs, and Audio I/O connections sections.
  • Page 22 1.2.3 LAN port LEDs Realtek 2.5Gb Ethernet port LED indications ACT/LINK SPEED Activity Link LED Speed LED Status Description Status Description No link No link 2.5 Gbps connection GREEN Linked GREEN LAN port 1 Gbps / 100 Mbps / BLINKING Data activity ORANGE 10 Mbps connection...
  • Page 23 IMPORTANT! Install a heatsink or AIO cooler after installing the CPU. Please refer to the Motherboard Installation Guide on the ASUS support site, or to the user manual of the heatsink/ AIO cooler for steps on installing the heatsink/AIO cooler.
  • Page 24 • Always install the DIMMs with the same CAS Latency. For an optimum compatibility, we recommend that you install memory modules of the same version or data code (D/C) from the same vendor. Check with the vendor to get the correct memory modules. • Visit the ASUS website for the latest QVL.
  • Page 25 Installing a DIMM Removing a DIMM...
  • Page 26 M.2 module installation 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 when removing or installing the screws or screw stands mentioned in this section.
  • Page 27 Install your M.2 module to the M.2 slot. IMPORTANT! Ensure that there is nothing obstructing your M.2 module when installing the M.2 module to the M.2 slot. Remove the plastic film from the thermal pads on the bottom of the heatsink. NOTE: If the thermal pad on the M.2 heatsink becomes damaged, we recommend replacing it with a thermal pad with a thickness of 1.25mm.
  • Page 28 Installing an M.2 module to the M.2_2 / M.2_3 slot Install the bundled screw stand to the M.2 length screw hole you wish to install your M.2 module to. Install your M.2 module to the M.2 slot. Secure your M.2 module using the bundled screw stand’s screw.
  • Page 29 USB storage device and filename/file format error. If this scenario happens, please restart the system to turn off the light. • Updating BIOS may have risks. If the BIOS program is damaged during the process and results to the system’s failure to boot up, please contact your local ASUS Service Center.
  • Page 30 BIOS and RAID Support 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 https://www.asus.com/support. Knowing UEFI BIOS BIOS (Basic Input and Output System) stores system hardware settings such as storage device configuration, overclocking settings, advanced power management, and boot device configuration that are needed for system startup in the motherboard CMOS.
  • Page 31 ASUS EZ Flash 3 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 system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu or press the <F5> hotkey.
  • Page 32 ASUS CrashFree BIOS 3 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 process. You can restore a corrupted BIOS file using a USB flash drive that contains the BIOS file.
  • Page 33 RAID configurations The motherboard supports RAID configurations. RAID definitions Volume provides the ability to link-together storage from one or several disks, regardless of the size of the space on those disks. This configuration is useful in scavenging space on disks unused by other disks in the array. This configuration does not provide performance benefits or data redundancy, disk failure will result in data loss.
  • Page 34 Appendix General notices FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538, USA Phone / Fax No: (510)739-3777 / (510)608-4555 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 35 ASUS follows the green design concept to design and manufacture our products, and makes sure that each stage of the product life cycle of ASUS product is in line with global environmental regulations. In addition, ASUS disclose the relevant information based on regulation requirements.
  • Page 36 ASUS products sold in Vietnam, on or after September 23, 2011,meet the requirements of the Vietnam Circular 30/2011/TT-BCT. Các sản phẩm ASUS bán tại Việt Nam, vào ngày 23 tháng 9 năm2011 trở về sau, đều phải đáp ứng các yêu cầu của Thông tư 30/2011/TT-BCT của Việt Nam.
  • Page 37 Français AsusTek Computer Inc. déclare par la présente que cet appareil est conforme aux critères essentiels et autres clauses pertinentes des directives concernées. La déclaration de conformité de l’UE peut être téléchargée à partir du site Internet suivant : www.asus.com/support Deutsch ASUSTeK Computer Inc.
  • Page 38 Español Por la presente, ASUSTeK Computer Inc. declara que este dispositivo cumple los requisitos básicos y otras disposiciones pertinentes de las directivas relacionadas. El texto completo de la declaración de la UE de conformidad está disponible en: www.asus.com/support Svenska ASUSTeK Computer Inc. förklarar härmed att denna enhet överensstämmer med de grundläggande kraven och andra relevanta föreskrifter i relaterade direktiv.
  • Page 39 ASUS offers a voluntary manufacturer’s Commercial Guarantee. • ASUS tilbyder en valgfri handelsmæssig garanti. • ASUS reserves the right to interpret the provisions of the ASUS • ASUS forbeholder sig retten til at fortolke bestemmelserne i ASUS’ Commercial Guarantee. handelsmæssige garanti.
  • Page 40 Si tiene alguna queja o necesidad de un centro de reparación local • ASUS ponuja prostovoljno tržno garancijo proizvajalca. o el periodo de garantía del producto ASUS, por favor visite el sitio • ASUS si pridržuje pravico do razlage določb tržne garancije de Soporte de ASUS en https://www.asus.com/mx/support/ para...
  • Page 41 ASUS. • Bảo hành thương mại này của ASUS được cung cấp độc lập và ngoài Bảo đảm pháp lý theo luật định và không có cách nào ảnh hưởng đến hoặc giới hạn các quyền theo Bảo lãnh pháp lý. Để biết tất cả các thông tin bảo hành, vui lòng truy cập...
  • Page 42 Address: 1F., No. 15, Lide Rd., Beitou Dist., Taipei City 112 https://qr.asus.com/ProductSafety ASUS COMPUTER INTERNATIONAL (America) Address: 48720 Kato Rd., Fremont, CA 94538, USA ASUS COMPUTER GmbH (Germany and Austria) Address: Harkortstrasse 21-23, 40880 Ratingen, Germany ASUSTeK (UK) LIMITED Address: 1st Floor, Sackville House, 143-149 Fenchurch Street, London, EC3M 6BL, England, United Kingdom ASUS GLOBAL PTE.
Save PDF