Aimed at business deployments, ASUS PRIME B650M-A II-CSM is the CSM (Corporate Stable Model) edition of the PRIME B650M-A II and includes an ACC Express activation key card. It specifies up to 192GB across four DDR5 slots, a PCIe 4.0 x16 slot, two M.2 slots (the first at PCIe 5.0 x4 on Ryzen 9000 or 7000) and Realtek 2.5Gb Ethernet, all on an mATX B650 board for AM5.
Product released: October 1, 2022
Latest firmware version
Version 4004, released September 21, 2026
Last checked for updates: Oct 31, 2026 05:41 UTC
What's new in version 4004
1. Update to AGESA ComboAM5 PI 1.3.0.1d.
2. Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency operation.
Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer
LatestUpdate has tracked 37 versions of ASUS PRIME B650M-A II-CSM firmware, released between April 14, 2023 and September 21, 2026.
Version 4004 - September 21, 2026: 1. Update to AGESA ComboAM5 PI 1.3.0.1d. 2. Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency op…
Version 3886 - July 2, 2026: Updated AGESA ComboAM5 PI 1.3.0.1b Patch A to support the GNR Transparent Secure Memory Encryption (TSME) feature. Before running the USB BIOS Flashback tool,…
Version 3881 - June 29, 2026: 1.Update AGESA ComboAM5 PI 1.3.0.1b. 2.Add support for EXPO ULL memory profiles. 3.Optimize ECC-UDIMM memory performance. Before running the USB BIOS Flashback…
Version 3858 - May 26, 2026: Improve system compatibility Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer
Version 3854 - April 23, 2026: • Update AGESA ComboAM5 PI 1.3.0.1. Note: This BIOS version cannot be rolled back to previous versions. Before running the USB BIOS Flashback tool, please rena…
Version 3842 - March 27, 2026: "1. AGESA updated to ComboAM5 PI_1.3.0.0a. 2. Provide additional stability margin during high-frequency DDR5 training. 3. Addresses potential boot failures and…
Version 3841 - February 26, 2026: 1. AGESA updated to ComboAM5 PI_1.3.0.0a. 2. Provide additional stability margin during high-frequency DDR5 training. 3. Addresses potential boot failures and…
Version 3827 - February 13, 2026: "1. AGESA updated to ComboAM5 PI_Pre1.3.0.0 for better security. 2. Enhanced system performance and stability. 3. Improved memory compatibility for JEDEC-compl…
Version 3602 - December 8, 2025: "1.AGESA updated to ComboAM5 PI 1.2.7.0. 2.Improves compatibility with various CPUs and devices. Note: This BIOS version cannot be rolled back to previous vers…
Version 3287 - October 27, 2025: "Updated AGESA to ComboAM5 PI 1.2.0.3g. Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer" Starting from…
Version 3283 - September 19, 2025: "Improve system stability. Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer" Starting from AGESA ComboA…
Version 3278 - August 5, 2025: "1. Updated AGESA to ComboAM5 PI 1.2.0.3f. 2. Enhanced system performance, stability, device compatibility, and overclocking support. Before running the USB BI…
Version 3263 - July 4, 2025: "1. Updated AGESA to ComboAM5 PI 1.2.0.3e for upcoming CPU compatibility. 2. Enhanced system performance and stability. 3. Important: This update is irreversib…
Version 3222 - March 7, 2025: "1. Enhanced system performance with support for 9950X3D and 9900X3D processors. 2. Included AI Cache Boost to enhance performance and compute power when using…
Version 3208 - February 11, 2025: "1.Updated AGESA to PI 1.2.0.3a Patch A. Please update the chipset driver to version 7.01.08.129 or newer to enhance gaming performance in select games. 2. Imp…
Version 3201 - January 16, 2025: "1.Updated AGESA to ComboAM5 PI 1.2.0.3. Please also update the chipset driver to version 7.01.08.129 or newer to enhance gaming performance for select games.…
Version 3067 - December 18, 2024: "SHA256: 426b1e58d4b63d2ea47a9fbe73aff846c8f9e9d980f07350ac53961bc9a0aa15 1.Updated AMD AGESA to version 1.2.0.2b 2.Fixed a few fan-related bugs and improved o…
Version 3057 - November 6, 2024: "1. Include Turbo Game Mode: Enhance performance in certain games. 2. Update AGESA Version to Combo AM5 PI 1.2.0.2a: Enhance compatibility and performance. Bef…
Version 3042 - October 22, 2024: "1.Updated to AMD AGESA PI 1.2.0.2. 2.Phase in AMD cTDP to 105W option for particular processors. Before running the USB BIOS Flashback tool, please rename the…
Version 3035 - September 12, 2024: "1. Updated to AMD AGESA PI 1.2.0.1a. 2. Resolved the SMM Lock Bypass and Sinkhole security vulnerabilities. 3. The control limit mode (cTDP to105W) was moved…
Version 3024 - August 7, 2024: "Update AGESA version to Combo AM5 PI 1.2.0.0a Patch A for better stability with AMD Ryzen™ 9000 series processors. Before running the USB BIOS Flashback tool,…
Version 3014 - July 23, 2024: "Update AGESA version to Combo AM5 PI 1.2.0.0a for optimizing next generation AMD Ryzen™ processors performance Before running the USB BIOS Flashback tool, ple…
Version 2613 - April 18, 2024: "Update AGESA version to Combo 1.1.7.0 patch A to support next generation AMD Ryzen™ processors Before running the USB BIOS Flashback tool, please rename the B…
Version 2413 - February 7, 2024: Disable STAPM of AM5 Ryzen™ 8000 processors to improve system performance. Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CA…
Version 2412 - January 30, 2024: "Update AGESA version to Combo AM5 PI 1.1.0.2b Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer" Starti…
Version 2214 - January 4, 2024: "1. Update AGESA version to Combo AM5 PI 1.1.0.1 2. Improve system stability 3. This update includes the patch for the LogoFAIL vulnerabilities 4. Support grap…
Version 1811 - October 16, 2023: "Improve system stability Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer." Starting from AGESA ComboA…
Version 1807 - October 11, 2023: Update AGESA version to Combo AM5 PI 1.0.8.0 to support upcoming CPU. Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) us…
Version 1654 - August 29, 2023: "1. Update AGESA version to Combo AM5 PI 1.0.0.7c 2. Improve system performance Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650M…
Version 1636 - August 4, 2023: "1. Update AGESA version to Combo AM5 PI 1.0.0.7b 2. Improve memory compatibility Before running the USB BIOS Flashback tool, please rename the BIOS file (PB65…
Version 1616 - May 16, 2023: "1. Update AGESA version to Combo AM5 PI 1.0.0.7.a 2. Support 48/24GB high-density DDR5 memory module. 3. Memory QVL amended to account for AMD 1.3V SoC voltag…
Version 1601 - May 16, 2023: "1. Update AGESA version to Combo AM5 PI 1.0.0.7. 2. Support 48/24GB high-density DDR5 memory module. 3. SoC voltage for Ryzen 7000 series limited to a maximum…
Version 1424 - May 15, 2023: "1.Improve system compatibility Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer" Starting from AGESA C…
Version 1414 - April 28, 2023: "SoC voltage for Ryzen 7000 series limited to a maximum of 1.30V to protect the CPU and motherboard. Before running the USB BIOS Flashback tool, please rename…
Version 1413 - April 28, 2023: SoC voltage for Ryzen 7000X3D series limited to a maximum of 1.30V to protect the CPU and motherboard. Before running the USB BIOS Flashback tool, please renam…
Version 1409 - April 24, 2023: 1. Update AGESA version to ComboAM5PI 1.0.0.6 2. TPM 2.0 security update 3. Recommended for optimum performance with AMD Ryzen™ 7000X3D series processors Befor…
Version 1410 - April 14, 2023: "1. Update AGESA version to ComboAM5PI 1.0.0.6 2. Supports high density DDR5 module 3. TPM 2.0 security update Before running the USB BIOS Flashback tool, plea…
Update prediction
A firmware update is expected soon, between October 6, 2026 and November 14, 2026.
ASUS typically releases firmware updates for this product approximately every 45 days.
Aimed at business deployments, ASUS PRIME B650M-A II-CSM is the CSM (Corporate Stable Model) edition of the PRIME B650M-A II and includes an ACC Express activation key card. It specifies up to 192GB across four DDR5 slots, a PCIe 4.0 x16 slot, two M.2 slots (the first at PCIe 5.0 x4 on Ryzen 9000 or 7000) and Realtek 2.5Gb Ethernet, all on an mATX B650 board for AM5. It was originally released on October 1, 2022.
What is the latest firmware version of ASUS PRIME B650M-A II-CSM?
The latest firmware version of ASUS PRIME B650M-A II-CSM is 4004. It was released on September 21, 2026.
What changed in ASUS PRIME B650M-A II-CSM firmware version 4004?
ASUS PRIME B650M-A II-CSM firmware version 4004 includes the following changes: 1. Update to AGESA ComboAM5 PI 1.3.0.1d.
2. Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency operation.
Before running the USB BIOS Flashback tool, please rename the BIOS file (PB650MA2.CAP) using BIOSRenamer
Where can I download the latest ASUS PRIME B650M-A II-CSM firmware?
Details and download instructions for the latest ASUS PRIME B650M-A II-CSM firmware (version 4004) are on ASUS's official release page: https://www.asus.com/motherboards-components/motherboards/csm/prime-b650m-a-ii-csm/helpdesk_bios/
How often does ASUS release firmware updates for ASUS PRIME B650M-A II-CSM?
We have tracked 37 firmware versions of ASUS PRIME B650M-A II-CSM. Based on historical patterns, updates are released approximately every 45 days.
When is the next ASUS PRIME B650M-A II-CSM firmware update expected?
Based on this product's update history, a firmware update for ASUS PRIME B650M-A II-CSM is expected soon, between October 6, 2026 and November 14, 2026.
Is ASUS PRIME B650M-A II-CSM still receiving firmware updates?
Yes, ASUS PRIME B650M-A II-CSM received a firmware update within the last 3 months. The most recent version is 4004.