Before closing your case:
| Pin | Signal | Function | Polarity | |-----|----------------|-----------------------------|----------| | 1 | PLED+ | Power LED Positive | + | | 3 | PLED- | Power LED Negative | - | | 5 | PWR_BTN | Power Switch | N/A | | 7 | GND | Power Switch Ground | - | | 9 | NC (or +5V) | Not connected (varies) | N/A | | 2 | HDLED+ | HDD Activity LED Positive | + | | 4 | HDLED- | HDD Activity LED Negative | - | | 6 | RESET_BTN | Reset Switch | N/A | | 8 | GND | Reset Switch Ground | - | | 10 | NC (or KEY) | Not connected or missing pin| N/A | acer ipisb-vr rev 1.01 front panel
For standard cases being migrated to this board, use the following pin assignments: Pin Numbers Connection Type Polarity Notes Pin 1 (+), Pin 3 (-) Pin 2 (+), Pin 4 (-) Reset Switch Polarity doesn't matter Power Switch Polarity doesn't matter Side-ways orientation; Pin 12 (+), Pin 14 (-) Important Installation Tips Missing Pin Before closing your case: | Pin | Signal
If you are reading this, you have likely found yourself staring at a bare Acer motherboard—specifically the —with a handful of tiny, two-pin connectors dangling from your computer case. You have the manual? Of course not. Acer, like many OEMs (Original Equipment Manufacturers), rarely provides detailed motherboard documentation. like many OEMs (Original Equipment Manufacturers)
(with the motherboard placed normally in a tower case):
The is a proprietary motherboard commonly found in Acer desktops such as the Aspire M3920, M3970, and AM3970 series. Based on the Intel H67 chipset, this board uses a non-standard front panel pinout that can cause confusion when upgrading a case or troubleshooting power/reset buttons.