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Made by ASUS · firmware
ASUS Pro B860M-C-CSM, the CSM (Corporate Stable Model) edition of the base Pro B860M-C for business deployments, is a micro-ATX board for Intel Core Ultra (Series 2) processors on LGA1851 with the B860 chipset. It supports 4 DDR5 DIMMs up to 256GB including CUDIMM, a PCIe 5.0 x16 SafeSlot and a PCIe 5.0 M.2 slot, and keeps Intel 1Gb Ethernet and a SPI TPM header.
Product released: January 1, 2025
Version 3401, released September 23, 2026
Last checked for updates: Oct 31, 2026 05:47 UTC
Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency operation. Updating this BIOS will simultaneously update the corresponding Intel ME to version 19.0.11.2289. The ME version will remain updated even if you roll back to an older BIOS later. We recommend using EZ Flash to update the BIOS, as it supports ZIP format and auto-updates the ME.
LatestUpdate has tracked 8 versions of ASUS Pro B860M-C-CSM firmware, released between May 19, 2025 and September 23, 2026.
This product was recently updated. The next firmware update is expected between November 10, 2026 and December 30, 2026.
ASUS typically releases firmware updates for this product approximately every 62 days.
Official ASUS Pro B860M-C-CSM product page
ASUS Pro B860M-C-CSM, the CSM (Corporate Stable Model) edition of the base Pro B860M-C for business deployments, is a micro-ATX board for Intel Core Ultra (Series 2) processors on LGA1851 with the B860 chipset. It supports 4 DDR5 DIMMs up to 256GB including CUDIMM, a PCIe 5.0 x16 SafeSlot and a PCIe 5.0 M.2 slot, and keeps Intel 1Gb Ethernet and a SPI TPM header. It was originally released on January 1, 2025.
The latest firmware version of ASUS Pro B860M-C-CSM is 3401. It was released on September 23, 2026.
ASUS Pro B860M-C-CSM firmware version 3401 includes the following changes: Enhanced memory performance, system stability, and compatibility with CXMT memory chips for improved low-latency operation. Updating this BIOS will simultaneously update the corresponding Intel ME to version 19.0.11.2289. The ME version will remain updated even if you roll back to an older BIOS later. We recommend using EZ Flash to update the BIOS, as it supports ZIP format and auto-updates the ME.
Details and download instructions for the latest ASUS Pro B860M-C-CSM firmware (version 3401) are on ASUS's official release page: https://www.asus.com/motherboards-components/motherboards/csm/pro-b860m-c-csm/helpdesk_bios/
We have tracked 8 firmware versions of ASUS Pro B860M-C-CSM. Based on historical patterns, updates are released approximately every 62 days.
ASUS Pro B860M-C-CSM was recently updated. Based on this product's update history, the next firmware update is expected between November 10, 2026 and December 30, 2026.
Yes, ASUS Pro B860M-C-CSM received a firmware update within the last 3 months. The most recent version is 3401.