ASRock · desktop motherboard

ASRock B450M Steel Legend MXB9Y0

BoardviewBIOS
Board code
MXB9Y0
Revisions
Rev 1.01
Files
4
Updated

ASRock B450M Steel Legend MXB9Y0 is a desktop motherboard.

The catalog has 2 boardview files and 2 BIOS files for it, posted between 2022 and 2024 across 3 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1.01; other revisions of the same board can differ in parts and layout.

The boardview comes in .FZ format. OpenBoardView (free) usually opens these files; FlexBV works too. See How to Open .FZ Boardview Files.

BIOS notes: file names mention 16 MB chip sizes. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Compatible models

  • ASRock B450M Steel Legend

Files for ASRock B450M Steel Legend MXB9Y0

Boardview files 2 All boardview files →

BIOS and firmware 2 All bios and firmware →

Frequently asked questions

Which laptops use the MXB9Y0 motherboard?
File names in the catalog tie MXB9Y0 to the ASRock B450M Steel Legend. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of MXB9Y0 do I have?
Files for this board mention Rev 1.01. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
How do I open the MXB9Y0 boardview file?
The boardview for MXB9Y0 is available as .FZ. .FZ usually opens in OpenBoardView (free) or FlexBV. See What Is a Boardview File and Why You Need One.
What should I check before flashing the MXB9Y0 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 16 MB images; the dump size must match your chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file