The most reliable method is to consult your board’s specific manual. However, this table represents the standard configuration for the on Intel G31-based variants, which is the most common:
The is a common motherboard often found in older pre-built systems (such as those from Acer) using the Intel LGA775 socket. Because "N15235" is actually a supplier code rather than a specific model number, exact pin layouts can vary slightly between versions like the G31MXP or G41MXE.
Orientation MATTERS. Light Emitting Diodes (LEDs) are directional.
| Pin | Signal | Polarity | Function | |------|--------|----------|----------| | 1 | HD_LED+ | Positive | Hard Disk Drive Activity LED (+) | | 3 | HD_LED– | Negative | HDD LED (–) | | 5 | RESET_SW– | Ground | Reset Switch (Ground) | | 7 | KEY | – | Missing pin (physical key) | | 9 | RSVD / 5VSB | – | Reserved / Standby power (do not connect) | | 2 | POWER_SW+ | Positive | Power Switch (+) | | 4 | POWER_SW– | Ground | Power Switch (–) | | 6 | POWER_LED+ | Positive | Power LED (+) | | 8 | POWER_LED– | Negative | Power LED (–) | | 10 | NC | – | No connection |