ASUS PRIME B650EM-A WIFI-CSM is the CSM (Corporate Stable Model) edition of the PRIME B650EM-A WIFI, aimed at business deployments. The mATX AM5 board on the AMD B650 chipset combines Wi-Fi 6 and Bluetooth v5.4 with Realtek 2.5Gb Ethernet, a PCIe 5.0 x16 slot, three M.2 slots and four DDR5 slots up to 256GB.
Product released: October 1, 2022
Latest firmware version
Version 4004, released September 21, 2026
Last checked for updates: Oct 31, 2026 17:41 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 (A5675.CAP) using BIOSRenamer
LatestUpdate has tracked 13 versions of ASUS PRIME B650EM-A WIFI-CSM firmware, released between April 21, 2025 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 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 1, 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 22, 2025: "Updated AGESA to ComboAM5 PI 1.2.0.3g. Before running the USB BIOS Flashback tool, please rename the BIOS file (A5675.CAP) using BIOSRenamer" Starting from AG…
Version 3283 - September 19, 2025: "Improve system stability. Before running the USB BIOS Flashback tool, please rename the BIOS file (A5675.CAP) using BIOSRenamer" Starting from AGESA ComboAM5…
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 3265 - 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 irreversible.…
Version 0220 - April 21, 2025: First Release Before running the USB BIOS Flashback tool, please rename the BIOS file (A5675.CAP) using BIOSRenamer
Update prediction
A firmware update is expected soon, between October 14, 2026 and November 21, 2026.
ASUS typically releases firmware updates for this product approximately every 50 days.
ASUS PRIME B650EM-A WIFI-CSM is the CSM (Corporate Stable Model) edition of the PRIME B650EM-A WIFI, aimed at business deployments. The mATX AM5 board on the AMD B650 chipset combines Wi-Fi 6 and Bluetooth v5.4 with Realtek 2.5Gb Ethernet, a PCIe 5.0 x16 slot, three M.2 slots and four DDR5 slots up to 256GB. It was originally released on October 1, 2022.
What is the latest firmware version of ASUS PRIME B650EM-A WIFI-CSM?
The latest firmware version of ASUS PRIME B650EM-A WIFI-CSM is 4004. It was released on September 21, 2026.
What changed in ASUS PRIME B650EM-A WIFI-CSM firmware version 4004?
ASUS PRIME B650EM-A WIFI-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 (A5675.CAP) using BIOSRenamer
Where can I download the latest ASUS PRIME B650EM-A WIFI-CSM firmware?
Details and download instructions for the latest ASUS PRIME B650EM-A WIFI-CSM firmware (version 4004) are on ASUS's official release page: https://www.asus.com/motherboards-components/motherboards/csm/prime-b650em-a-wifi-csm/helpdesk_bios/
How often does ASUS release firmware updates for ASUS PRIME B650EM-A WIFI-CSM?
We have tracked 13 firmware versions of ASUS PRIME B650EM-A WIFI-CSM. Based on historical patterns, updates are released approximately every 50 days.
When is the next ASUS PRIME B650EM-A WIFI-CSM firmware update expected?
Based on this product's update history, a firmware update for ASUS PRIME B650EM-A WIFI-CSM is expected soon, between October 14, 2026 and November 21, 2026.
Is ASUS PRIME B650EM-A WIFI-CSM still receiving firmware updates?
Yes, ASUS PRIME B650EM-A WIFI-CSM received a firmware update within the last 3 months. The most recent version is 4004.