ATXA is an ATX adapter borad to manage the power of your computer. The product includes two modules A-board and B-board. A-board is connected to the Raspberry Pi, B-board is connected to the computer's motherboard, and A-board is connected to B-board through a network cable.
A-board is connected to the Raspberry Pi. The following table is a typical connection method in PiKVM application.
| A-board | RPI4 |
|---|---|
| GND | GND |
| 3V3 | 3V3 |
| LED PWR | GPIO24 |
| LED HDD | GPIO22 |
| SW PWR | GPIO23 |
| SW RST | GPIO27 |
A-board is connected to B-board through a network cable. The following table is the corresponding relationship between the pin status of A-board and B-board.
| Pins on A-board | Pins on B-board |
|---|---|
| LED PWR is HIGH | LED PWR+ is HIGH, LED PWR- is LOW |
| LED PWR is LOW | LED PWR+ is LOW, LED PWR- is LOW |
| LED HDD is HIGH | LED HDD+ is HIGH, LED HDD- is LOW |
| LED HDD is LOW | LED HDD+ is LOW, LED HDD- is LOW |
| SW PWR is HIGH | BTN PWR+ and BTN PWR- connected, the power button is pressed |
| SW PWR is LOW | BTN PWR+ and BTN PWR- disconnected, the power button is unpressed |
| SW RST is HIGH | BTN RST+ and BTN RST- connected, the reset button is pressed |
| SW RST is LOW | BTN RST+ and BTN RST- disconnected, the reset button is unpressed |
The b-board has an adapted full-height and half-height metal PCI mounting plate, which can be installed on the computer case. The user connects the pins on the B-board to the ATX control interface on the computer motherboard using the color DuPont cables provided with the product.
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