The "Ver 1.4" on your board is the PCB revision. It indicates minor changes from Ver 1.2 or 1.3, but usually, the audio chip remains the same across revisions.
| Operating System | ALC655 (AC'97) Support | ALC662 (HD Audio) Support | | :--- | :--- | :--- | | | Perfect (Full Driver exists) | Perfect (Full Driver exists) | | Windows Vista | Limited (Basic stereo only) | Good (Driver exists) | | Windows 7 (32-bit) | Good (Full Driver exists) | Perfect | | Windows 7 (64-bit) | Weak (No official 64-bit driver) | Good (Driver exists) | | Windows 8/8.1 | Unstable (Use generic MS driver) | Good | | Windows 10/11 | Not recommended (Use USB sound card) | Limited (Works with legacy driver) | Zebronic I945lm4 Ver 1.4 Motherboard Sound Driver Full
Intel Core 2 Duo, Pentium D, Celeron (Socket 775). The "Ver 1
This is the most common post-installation failure. Your case front panel audio uses either AC'97 or HD Audio connectors. This is the most common post-installation failure