| Pin | Signal | Pin | Signal | | :--- | :--- | :--- | :--- | | 1 | Power LED (+) | 2 | Power LED (-) | | 3 | Power Button | 4 | Power Button | | 5 | HDD LED (+) | 6 | HDD LED (-) | | 7 | Reset Button | 8 | Reset Button | | 9 | / Reserved | 10 | NC / Reserved |
This is often the most requested info for this board. The header usually has a layout (sometimes 10-pin with missing pins) : HDD LED: Pins 1 (+) & 2 (-) Power LED: Pins 2 (+) & 4 (-) Reset Switch: Pins 5 & 7 Power Button: Pins 6 & 8 LAN LED: Pins 12 & 14 🚀 Supported CPUs (4th Gen Intel "Haswell")
These processors are compatible with this motherboard: Intel Pentium G3220. Intel Celeron G1820. or partnumber of your model! Acer Community Front panel pin installation, help! - Acer Community
The 12-pin main power connector eliminates -12V and +3.3V rails from the PSU. The board generates its own +3.3V via linear regulators from +5VSB. This means a standard ATX PSU cannot be plugged in directly without an adapter or pin rewire.
A: No. The H81 chipset does not have PCIe lanes for NVMe. However, you can use an NVMe drive via a PCIe x1 to M.2 adapter, but it will be slower than SATA. Boot from NVMe is not supported without a modded BIOS.
The header typically features a standard 9-pin layout (9 pins within a 10-pin grid, missing one pin as an alignment key). Pin Number Signal Name Connected To Cable Wire Color Hard Drive Activity Light (+) Colored Wire Pin 2 FP_PWR_SLP + Power LED Status (+) Colored Wire Pin 3 Hard Drive Activity Light (-) White/Black Wire Pin 4 FP_PWR_SLP - Power LED Status (-) White/Black Wire Pin 5 Reset Switch Ground (-) White/Black Wire Pin 6 Power Switch Signal (+) Colored Wire Pin 7 Reset Switch Signal (+) Colored Wire Pin 8 Power Switch Ground (-) White/Black Wire Pin 9 No Pin (Empty) None 5. Audio and USB Internal Headers Front Panel Audio (F_AUDIO)
Pull back the retaining clips on either side of the DDR3 DIMM slots.
Tap F12 to select a temporary boot device (like a USB installer) without changing permanent BIOS settings.
Here is a breakdown of your options for upgrading this motherboard:
This board requires both the 24-pin ATX main power and a 4-pin CPU power connector from your PSU. 3. Ports and Connectivity
If the system fails to boot after a hardware change or a bad BIOS tweak, you must reset the CMOS memory. Turn off the computer and unplug the power cord.
1 x 24-pin ATX Main Power, 1 x 4-pin ATX 12V CPU Power 2. Processor (CPU) Compatibility
| Pin | Signal | Pin | Signal | | :--- | :--- | :--- | :--- | | 1 | Power LED (+) | 2 | Power LED (-) | | 3 | Power Button | 4 | Power Button | | 5 | HDD LED (+) | 6 | HDD LED (-) | | 7 | Reset Button | 8 | Reset Button | | 9 | / Reserved | 10 | NC / Reserved |
This is often the most requested info for this board. The header usually has a layout (sometimes 10-pin with missing pins) : HDD LED: Pins 1 (+) & 2 (-) Power LED: Pins 2 (+) & 4 (-) Reset Switch: Pins 5 & 7 Power Button: Pins 6 & 8 LAN LED: Pins 12 & 14 🚀 Supported CPUs (4th Gen Intel "Haswell")
These processors are compatible with this motherboard: Intel Pentium G3220. Intel Celeron G1820. or partnumber of your model! Acer Community Front panel pin installation, help! - Acer Community
The 12-pin main power connector eliminates -12V and +3.3V rails from the PSU. The board generates its own +3.3V via linear regulators from +5VSB. This means a standard ATX PSU cannot be plugged in directly without an adapter or pin rewire. Acer H81h3-am V1.0 Manual
A: No. The H81 chipset does not have PCIe lanes for NVMe. However, you can use an NVMe drive via a PCIe x1 to M.2 adapter, but it will be slower than SATA. Boot from NVMe is not supported without a modded BIOS.
The header typically features a standard 9-pin layout (9 pins within a 10-pin grid, missing one pin as an alignment key). Pin Number Signal Name Connected To Cable Wire Color Hard Drive Activity Light (+) Colored Wire Pin 2 FP_PWR_SLP + Power LED Status (+) Colored Wire Pin 3 Hard Drive Activity Light (-) White/Black Wire Pin 4 FP_PWR_SLP - Power LED Status (-) White/Black Wire Pin 5 Reset Switch Ground (-) White/Black Wire Pin 6 Power Switch Signal (+) Colored Wire Pin 7 Reset Switch Signal (+) Colored Wire Pin 8 Power Switch Ground (-) White/Black Wire Pin 9 No Pin (Empty) None 5. Audio and USB Internal Headers Front Panel Audio (F_AUDIO)
Pull back the retaining clips on either side of the DDR3 DIMM slots. | Pin | Signal | Pin | Signal
Tap F12 to select a temporary boot device (like a USB installer) without changing permanent BIOS settings.
Here is a breakdown of your options for upgrading this motherboard:
This board requires both the 24-pin ATX main power and a 4-pin CPU power connector from your PSU. 3. Ports and Connectivity or partnumber of your model
If the system fails to boot after a hardware change or a bad BIOS tweak, you must reset the CMOS memory. Turn off the computer and unplug the power cord.
1 x 24-pin ATX Main Power, 1 x 4-pin ATX 12V CPU Power 2. Processor (CPU) Compatibility