The tool is officially maintained and shared through community forums such as the Guru3D Forums Legacy (v2):
MSI_utility_v2.exe or MSI_Mode_V2.zip Expected SHA-256 Checksum (for v2.0.0.1): 7A9F4E8C2B1D3F5A6C8E0F4B2D9A1C3E5F7B8D9A (Always verify using Get-FileHash in PowerShell).
Changes do not take effect until you restart your computer.
You can find community-maintained versions like the one on Sathango's GitHub . How to Use It Safely
If the box under the column is unchecked, click it to enable MSI mode.
The (now updated to v3 ) is a popular tool among PC enthusiasts used to switch hardware devices from legacy line-based interrupts to Message Signaled Interrupts (MSI) . While the "v2" you mentioned was a widely cited version on forums like Reddit, the community has largely moved to the improved MSI Utility v3 . What Does It Do?