The ASUS PRIME B550M-K is an ASUS PRIME series mainstream motherboard supporting AMD Ryzen processors (AMD 500-series chipset) on the AM4 socket with DDR4 memory. It targets home office users and mainstream builders and provides a comprehensive feature set for its platform tier. BIOS updates deliver stability improvements, security patches, new processor compatibility, and platform optimizations.
Product released: June 1, 2020
Latest firmware version
Version 4101, released January 21, 2026
What's new in version 4101
1. Enhance system stability, security, and compatibility.