> For the complete documentation index, see [llms.txt](https://docs.arkelectron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arkelectron.com/products/embedded-computers/ark-just-a-pi/pinout.md).

# Pinout

<figure><img src="https://1515919775-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwmEn1N45AR4WjMQhHlu%2Fuploads%2FKSXEGBBMW4v3fStprM68%2FPinout%20Drawing%20Top.png?alt=media&amp;token=d133d601-49b3-47b4-b93b-dd9cff60fb35" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1515919775-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwmEn1N45AR4WjMQhHlu%2Fuploads%2F4BbVhsd5eOKF90ylCa1f%2FPinout%20Drawing%20Bottom.png?alt=media&amp;token=11819837-421f-4d8d-81e6-ef4dc2bdd1b4" alt=""><figcaption></figcaption></figure>

{% file src="/files/rEk5tGTkkooCudUB5EDI" %}

#### POWER - 6 Pin 2.00mm Molex [CLIK-Mate 502443](https://www.molex.com/en-us/part-list/502443)

Mating plug [5024390600](https://www.digikey.com/en/products/detail/molex/5024390600/2380425)

Pre-crimped wires [0797581014](https://www.digikey.com/en/products/detail/molex/0797581014/6346648)

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>VDD_5V_IN</td><td>5.0V</td></tr><tr><td>2</td><td>VDD_5V_IN</td><td>5.0V</td></tr><tr><td>3</td><td>PI_SCL1_PWR_EXT</td><td>3.3V</td></tr><tr><td>4</td><td>PI_SDA1_PWR_EXT</td><td>3.3V</td></tr><tr><td>5</td><td>GND</td><td>GND</td></tr><tr><td>6</td><td>GND</td><td>GND</td></tr></tbody></table>

#### Fan - 4 Pin JST\_SH

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>VDD_5V_IN</td><td>5.0V (500mA)</td></tr><tr><td>2</td><td>FAN_PWM</td><td>5.0V</td></tr><tr><td>3</td><td>GND</td><td>GND</td></tr><tr><td>4</td><td>FAN_TACHO</td><td>5.0V</td></tr></tbody></table>

#### UART0 DEBUG/GPIO - 6 Pin JST-GH

<table><thead><tr><th width="134">Pin Number</th><th width="304">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>VDD_5V_IN</td><td>5.0V (500mA)</td></tr><tr><td>2</td><td>UART0_TX/GPIO14</td><td>3.3V</td></tr><tr><td>3</td><td>UART0_RX/GPIO15</td><td>3.3V</td></tr><tr><td>4</td><td>UART0_CTS/GPIO16</td><td>3.3V</td></tr><tr><td>5</td><td>UART0_RTS/GPIO17</td><td>3.3V</td></tr><tr><td>6</td><td>GND</td><td>GND</td></tr></tbody></table>

#### UART2/SPI3/GPIO - 6 Pin JST-GH

<table><thead><tr><th width="134">Pin Number</th><th width="302">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>VDD_5V_IN</td><td>5.0V (500mA)</td></tr><tr><td>2</td><td>UART2_TXD/SPI3_CSn/GPIO4</td><td>3.3V</td></tr><tr><td>3</td><td>UART2_RXD/SPI3_MISO/GPIO5</td><td>3.3V</td></tr><tr><td>4</td><td>UART2_CTS/SPI3_MOSI/GPIO6</td><td>3.3V</td></tr><tr><td>5</td><td>UART2_RTS/SPI3_SCLK/GPIO7</td><td>3.3V</td></tr><tr><td>6</td><td>GND</td><td>GND</td></tr></tbody></table>

#### UART3/SPI4/GPIO - 6 Pin JST-GH

<table><thead><tr><th width="134">Pin Number</th><th width="296">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>VDD_5V_IN</td><td>5.0V (500mA)</td></tr><tr><td>2</td><td>UART3_TXD/SPI4_CSn/GPIO8</td><td>3.3V</td></tr><tr><td>3</td><td>UART3_RXD/SPI4_MISO/GPIO9</td><td>3.3V</td></tr><tr><td>4</td><td>UART3_CTS/SPI4_MOSI/GPIO10</td><td>3.3V</td></tr><tr><td>5</td><td>UART3_RTS/SPI4_SCLK/GPIO11</td><td>3.3V</td></tr><tr><td>6</td><td>GND</td><td>GND</td></tr></tbody></table>

#### UART4/PWM/GPIO - 6 Pin JST-GH

<table><thead><tr><th width="134">Pin Number</th><th width="296">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>VDD_5V_IN</td><td>5.0V (500mA)</td></tr><tr><td>2</td><td>UART4_TXD/PWM0/GPIO12</td><td>3.3V</td></tr><tr><td>3</td><td>UART4_RXD/PWM1/GPIO13</td><td>3.3V</td></tr><tr><td>4</td><td>PWM2/GPIO18</td><td>3.3V</td></tr><tr><td>5</td><td>PWM3/GPIO19</td><td>3.3V</td></tr><tr><td>6</td><td>GND</td><td>GND</td></tr></tbody></table>

#### CAM1/CSI0- 22 Pin 0.5mm FFC

<table><thead><tr><th width="153">Pin Number</th><th width="210">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>GND</td><td>GND</td></tr><tr><td>2</td><td>MIPI0_D0_N</td><td>1.2V</td></tr><tr><td>3</td><td>MIPI0_D0_P</td><td>1.2V</td></tr><tr><td>4</td><td>GND</td><td>GND</td></tr><tr><td>5</td><td>MIPI0_D1_N</td><td>1.2V</td></tr><tr><td>6</td><td>MIPI0_D1_P</td><td>1.2V</td></tr><tr><td>7</td><td>GND</td><td>GND</td></tr><tr><td>8</td><td>MIPI0_C_N</td><td>1.2V</td></tr><tr><td>9</td><td>MIPI0_C_P</td><td>1.2V</td></tr><tr><td>10</td><td>GND</td><td>GND</td></tr><tr><td>11</td><td>MIPI0_D2_N</td><td>1.2V</td></tr><tr><td>12</td><td>MIPI0_D2_P</td><td>1.2V</td></tr><tr><td>13</td><td>GND</td><td>GND</td></tr><tr><td>14</td><td>MIPI0_D3_N</td><td>1.2V</td></tr><tr><td>15</td><td>MIPI0_D3_P</td><td>1.2V</td></tr><tr><td>16</td><td>GND</td><td>GND</td></tr><tr><td>17</td><td>CAM_GPIO0</td><td>3.3V</td></tr><tr><td>18</td><td>CAM_GPIO1</td><td>3.3V</td></tr><tr><td>19</td><td>GND</td><td>GND</td></tr><tr><td>20</td><td>SCL0</td><td>3.3V</td></tr><tr><td>21</td><td>SDA0</td><td>3.3V</td></tr><tr><td>22</td><td>VDD_3V3_CAMERA</td><td>3.3V (1A)</td></tr></tbody></table>

#### CAM2/CSI1- 22 Pin 0.5mm FFC

<table><thead><tr><th width="153">Pin Number</th><th width="210">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>GND</td><td>GND</td></tr><tr><td>2</td><td>MIPI1_D0_N</td><td>1.2V</td></tr><tr><td>3</td><td>MIPI1_D0_P</td><td>1.2V</td></tr><tr><td>4</td><td>GND</td><td>GND</td></tr><tr><td>5</td><td>MIPI1_D1_N</td><td>1.2V</td></tr><tr><td>6</td><td>MIPI1_D1_P</td><td>1.2V</td></tr><tr><td>7</td><td>GND</td><td>GND</td></tr><tr><td>8</td><td>MIPI1_C_N</td><td>1.2V</td></tr><tr><td>9</td><td>MIPI1_C_P</td><td>1.2V</td></tr><tr><td>10</td><td>GND</td><td>GND</td></tr><tr><td>11</td><td>MIPI1_D2_N</td><td>1.2V</td></tr><tr><td>12</td><td>MIPI1_D2_P</td><td>1.2V</td></tr><tr><td>13</td><td>GND</td><td>GND</td></tr><tr><td>14</td><td>MIPI1_D3_N</td><td>1.2V</td></tr><tr><td>15</td><td>MIPI1_D3_P</td><td>1.2V</td></tr><tr><td>16</td><td>GND</td><td>GND</td></tr><tr><td>17</td><td>Pulled up to 3.3V via 1.5k Ohm Resistor</td><td>3.3V</td></tr><tr><td>18</td><td>NC</td><td>NC</td></tr><tr><td>19</td><td>GND</td><td>GND</td></tr><tr><td>20</td><td>ID_SC</td><td>3.3V</td></tr><tr><td>21</td><td>ID_SD</td><td>3.3V</td></tr><tr><td>22</td><td>VDD_3V3_CAMERA</td><td>3.3V (1A)</td></tr></tbody></table>

#### USB - 4 Pin JST-GH

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>USB2_VBUS</td><td>5.0V (1A)</td></tr><tr><td>2</td><td>USB2_N</td><td>3.3V</td></tr><tr><td>3</td><td>USB2_P</td><td>3.3V</td></tr><tr><td>4</td><td>GND</td><td>GND</td></tr></tbody></table>

#### ETH1 - 4 Pin JST-GH

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>EXT1_ETH_RX_N</td><td>Isolated</td></tr><tr><td>2</td><td>EXT1_ETH_RX_P</td><td>Isolated</td></tr><tr><td>3</td><td>EXT1_ETH_TX_N</td><td>Isolated</td></tr><tr><td>4</td><td>EXT1_ETH_TX_P</td><td>Isolated</td></tr></tbody></table>

#### ETH2 - 4 Pin JST-GH

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>EXT2_ETH_RX_N</td><td>Isolated</td></tr><tr><td>2</td><td>EXT2_ETH_RX_P</td><td>Isolated</td></tr><tr><td>3</td><td>EXT2_ETH_TX_N</td><td>Isolated</td></tr><tr><td>4</td><td>EXT2_ETH_TX_P</td><td>Isolated</td></tr></tbody></table>

#### PCIE - 16 Pin FFC CF20161V0R0-NH

<table><thead><tr><th width="134">Pin Number</th><th width="237">Signal Name</th><th>Voltage</th></tr></thead><tbody><tr><td>1</td><td>5V_PCIE_FFC</td><td>5.0V (1.5A)</td></tr><tr><td>2</td><td>5V_PCIE_FFC</td><td>5.0V (1.5A)</td></tr><tr><td>3</td><td>GND</td><td>GND</td></tr><tr><td>4</td><td>PCIE_CLK_P</td><td>1.0V</td></tr><tr><td>5</td><td>PCIE_CLK_N</td><td>1.0V</td></tr><tr><td>6</td><td>GND</td><td>GND</td></tr><tr><td>7</td><td>PCIE_RX_P</td><td>1.0V</td></tr><tr><td>8</td><td>PCIE_RX_N</td><td>1.0V</td></tr><tr><td>9</td><td>GND</td><td>GND</td></tr><tr><td>10</td><td>PCIE_TX_P</td><td>1.0V</td></tr><tr><td>11</td><td>PCIE_TX_N</td><td>1.0V</td></tr><tr><td>12</td><td>GND</td><td>GND</td></tr><tr><td>13</td><td>PCIE_PWR_EN</td><td>3.3V</td></tr><tr><td>14</td><td>PCIE_WAKEn</td><td>3.3V</td></tr><tr><td>15</td><td>PCIE2_CLKREQn</td><td>3.3V</td></tr><tr><td>16</td><td>PCIE2_RSTn</td><td>3.3V</td></tr></tbody></table>


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