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Made by ASUS · firmware
ASUS EX-B850M-V9-CSM is the CSM (Corporate Stable Model) edition of the EX-B850M-V9, aimed at business deployments. It is a micro-ATX AM5 board on the AMD B850 chipset for Ryzen 9000, 8000 and 7000 desktop processors, with four DDR5 slots up to 256GB. Two M.2 slots, Realtek 2.5Gb Ethernet and an HDMI output are onboard, and the box adds an ACC Express activation key card.
Product released: January 1, 2025
Version 1804, released September 21, 2026
Last checked for updates: Oct 31, 2026 05:42 UTC
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.
LatestUpdate has tracked 10 versions of ASUS EX-B850M-V9-CSM firmware, released between January 7, 2026 and September 21, 2026.
A firmware update was expected by November 1, 2026 but has not yet been released.
ASUS typically releases firmware updates for this product approximately every 43 days.
Official ASUS EX-B850M-V9-CSM product page
ASUS EX-B850M-V9-CSM is the CSM (Corporate Stable Model) edition of the EX-B850M-V9, aimed at business deployments. It is a micro-ATX AM5 board on the AMD B850 chipset for Ryzen 9000, 8000 and 7000 desktop processors, with four DDR5 slots up to 256GB. Two M.2 slots, Realtek 2.5Gb Ethernet and an HDMI output are onboard, and the box adds an ACC Express activation key card. It was originally released on January 1, 2025.
The latest firmware version of ASUS EX-B850M-V9-CSM is 1804. It was released on September 21, 2026.
ASUS EX-B850M-V9-CSM firmware version 1804 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.
Details and download instructions for the latest ASUS EX-B850M-V9-CSM firmware (version 1804) are on ASUS's official release page: https://www.asus.com/motherboards-components/motherboards/csm/ex-b850m-v9-csm/helpdesk_bios/
We have tracked 10 firmware versions of ASUS EX-B850M-V9-CSM. Based on historical patterns, updates are released approximately every 43 days.
Based on ASUS EX-B850M-V9-CSM's historical update patterns, a firmware update was expected by November 1, 2026 but has not yet been released. This may indicate an upcoming release or a change in the product's update schedule.
Yes, ASUS EX-B850M-V9-CSM received a firmware update within the last 3 months. The most recent version is 1804.