> For the complete documentation index, see [llms.txt](https://auvidea.gitbook.io/x221d-and-x221d-ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://auvidea.gitbook.io/x221d-and-x221d-ai/manual/x221d-overview.md).

# X221D Overview

<figure><img src="https://3480930486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F07Q4IzUMQaWTME2wV4nQ%2Fuploads%2FfulvNmmYF5eArlJw5plc%2F0.png?alt=media" alt=""><figcaption><p>X221D with AGX Xavier</p></figcaption></figure>

## Product SKU

<table><thead><tr><th width="173">SKU</th><th>Description</th></tr></thead><tbody><tr><td>70884</td><td>Standard version</td></tr></tbody></table>

## Document versions and changes

<table><thead><tr><th width="120">Version</th><th>Changes</th></tr></thead><tbody><tr><td>0.1</td><td>Initial document, internal verification process</td></tr><tr><td>0.3</td><td>Reduced board variety, fixed appendix B</td></tr><tr><td>0.4</td><td>Added AI Version and bottom pinout description and information about swapped labels for J5 and J28</td></tr><tr><td>1.0</td><td>Integration of X221D-AI version</td></tr><tr><td>1.1</td><td>Added missing Information to several chapters</td></tr><tr><td>1.2</td><td>Ported Manual to Gitbook</td></tr></tbody></table>

{% hint style="warning" %}
Auvidea can take no responsibility for the accuracy or completeness of any information presented in an exported PDF document as the export feature is developed, managed and maintained by GitBook. Those export mechanisms are subject to change without interaction by Auvidea. Please note that Auvidea includes this version table to identify the document and reference changes.
{% endhint %}

## Product revisions and changes <a href="#toc127805511" id="toc127805511"></a>

<table><thead><tr><th width="134">Version</th><th>Changes</th></tr></thead><tbody><tr><td>38500-1</td><td>Initial release version</td></tr></tbody></table>

## Introduction <a href="#toc127805513" id="toc127805513"></a>

The X221D is intended to be a great development platform.

This system lets you dive into AI with ease. It allows you to explore AI applications like people detection, face masking and more. The full suite of NVIDIA SDKs may be installed. At your choice, these systems may be equipped with the entire family of NVIDIA compute modules with the AGX Xavier form factor.

The X221D features an industrial strength design and is commercially deployable in any volume.

## Carrier board features <a href="#toc127805514" id="toc127805514"></a>

X221D has only components on top side.

X221D-AI (All In) features components on the top and bottom side, with expanded features.

<table data-full-width="true"><thead><tr><th width="337.33333333333326">Description</th><th>X221D</th><th>X221D-AI</th></tr></thead><tbody><tr><td>Operating Voltage</td><td>12V (20V abs. max)</td><td>12V (20V abs. max)</td></tr><tr><td>Jetson power modes</td><td>30W + MAXN</td><td>30W + MAXN</td></tr><tr><td>Supported modules</td><td>AGX-Xavier, AGX-Xavier-Industrial</td><td>AGX-Xavier, AGX-Xavier-Industrial</td></tr><tr><td>Supported module configurations</td><td>Configuration 2</td><td>Configuration 2</td></tr><tr><td>Super Cap UPS</td><td>(optional)</td><td>(optional)</td></tr><tr><td>RTC super cap</td><td>200mF</td><td>200mF</td></tr><tr><td>Rechargeable lithium cell (MS621FE)</td><td>(optional)</td><td>(optional)</td></tr><tr><td>Power out</td><td>-</td><td><p>5V 2A (J35)</p><p>12V 3A (J31)</p></td></tr><tr><td>Power/Reset/Force-Recovery Buttons</td><td>-</td><td>yes</td></tr><tr><td>Revers voltage protection</td><td>yes</td><td>yes</td></tr><tr><td>Overvoltage protection</td><td>yes</td><td>yes</td></tr><tr><td>HDMI out (4kp60)</td><td>1x</td><td>1x</td></tr><tr><td>USB 2.0</td><td>1x microUSB</td><td><p>1x quad USB2.0 hub:</p><p>(1: J41, 2: U14 (LM823), 3: U13 (LM823) (or J39 - optional))</p><p>1x microUSB</p></td></tr><tr><td>USB 3.0</td><td><p>2x USB-A (J15)</p><p>+1x FPC (J3)</p></td><td><p>2x USB-A (J15)</p><p>+ 1x FPC (J3)</p></td></tr><tr><td>Safety MCU</td><td>-</td><td>yes (UART via LTE option)</td></tr><tr><td>Basic MCU</td><td>yes</td><td>-</td></tr><tr><td>GbE (RJ45)</td><td>2x RTL8111 (PCIe to GbE)</td><td>2x RTL8111 (PCIe to GbE)</td></tr><tr><td>WIFI</td><td>-</td><td>- (2x optional LM823-1463)</td></tr><tr><td>MicroSD/UFS card slot</td><td>-</td><td>1x</td></tr><tr><td>CAN1 (RX/TX only) (J6)</td><td>1x</td><td>1x</td></tr><tr><td>CAN0 (J12)</td><td>1x</td><td>1x</td></tr><tr><td>UART5 (user UART)</td><td>-</td><td>1x RX/TX/RTS (3.3V) (J30)</td></tr><tr><td>UART1 (user UART)</td><td>-</td><td>1x UART1 (3.3V) + 2x GPIO</td></tr><tr><td>SPI</td><td>1x (1.8V) (J28)</td><td>1x (1.8V) (J28)</td></tr><tr><td>I2S</td><td>-</td><td>1x I2S2 (1.8V) (J36)<br>1x I2S3 (1.8V) (J23) + 2x GPIO</td></tr><tr><td>I2C</td><td>2x J7 + J33</td><td>2x J7 + J33<br>1x J32</td></tr><tr><td></td><td></td><td></td></tr><tr><td>PCIe x4</td><td>1x 40p FPC (J20)</td><td>1x 40p FPC (J20)</td></tr><tr><td>PCIe x1</td><td>1x 22p FPC (J37)</td><td>1x 22p FPC (J37)</td></tr><tr><td>CSI-2 (4 lanes each)</td><td>2x (3.3V) (J24+J19) 1.8V/5V opt.</td><td>2x (3.3V) (J24+J19) 1.8V/5V opt.</td></tr><tr><td>Auto flashing</td><td>yes</td><td>yes</td></tr><tr><td>Debug port</td><td>yes (J10)</td><td>yes (J10)</td></tr><tr><td>Fan connector (5V, PWM)</td><td>1x</td><td>1x</td></tr><tr><td>RGB LED (GPIO controlled)</td><td>yes</td><td>yes</td></tr><tr><td>Crypto authentication chip</td><td>- (planned for rev. 3)</td><td>- (planned for rev. 3)</td></tr></tbody></table>

## Technical specification <a href="#toc127805516" id="toc127805516"></a>

| Description       |                        | Note                                                  |
| ----------------- | ---------------------- | ----------------------------------------------------- |
| HDMI              | 2.0, 4k60p             |                                                       |
| USB 3.1           | 10Gb/s                 |                                                       |
| Physical size     | 125mm x 104.6mm        | 3D STP model available                                |
| Mounting holes    | For 4x M3 (3.2mm)      |                                                       |
| Temperature range | -25°C to +70°C         | Cold temperature monitoring with MCU optional         |
| Humidity          | Noncondensing humidity |                                                       |
| Longevity         | Very good              | No temperature sensitive electrolytic capacitors used |

## Model pictures <a href="#toc127805517" id="toc127805517"></a>

<table><thead><tr><th width="122.33333333333331"></th><th>Top side</th><th>Bottom side</th></tr></thead><tbody><tr><td>X221D</td><td><img src="https://3480930486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F07Q4IzUMQaWTME2wV4nQ%2Fuploads%2Fkm9G81eISnc2TmzdUick%2F1.png?alt=media" alt="" data-size="original"></td><td><img src="https://3480930486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F07Q4IzUMQaWTME2wV4nQ%2Fuploads%2Fbq93OAmSjesZgzbwvswx%2F2.png?alt=media" alt="" data-size="original"></td></tr><tr><td>X221D-AI</td><td><img src="https://3480930486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F07Q4IzUMQaWTME2wV4nQ%2Fuploads%2FxXE2VW2N0mR91lCOHGeF%2F3.png?alt=media" alt="" data-size="original"></td><td><img src="https://3480930486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F07Q4IzUMQaWTME2wV4nQ%2Fuploads%2FCCRweHVhTcu5mmHENA8R%2F4.png?alt=media" alt="" data-size="original"></td></tr><tr><td>X221D with module and cooler</td><td><img src="https://3480930486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F07Q4IzUMQaWTME2wV4nQ%2Fuploads%2Ft0oAB311TBcDHdGzhsWk%2F5.png?alt=media" alt="" data-size="original"></td><td><img src="https://3480930486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F07Q4IzUMQaWTME2wV4nQ%2Fuploads%2FbD32EFIeKnX0zfWjlmxd%2F6.png?alt=media" alt="" data-size="original"></td></tr></tbody></table>

The heat sink is designed for the AGX Xavier & AGX Xavier Industrial & AGX Orin. It is designed to mount a standard 80×80 mm fan. A production version is available. The Heat sink is not included with the base board. Sets may be available.

Please see our Heat sink and Fan solution on our website: <https://auvidea.eu/product/70861/>

Or our Product Brief for the Heat sink and Fan: <https://auvidea.eu/download/D70861.pdf>

## Power consumption and efficiency <a href="#toc127805518" id="toc127805518"></a>

| Description                           | X221D & X221D-AI |
| ------------------------------------- | ---------------- |
| Carrier board logic                   | 1-2W             |
| 1.8/3.3/5V power converter efficiency | >90%             |
| Power in converter efficiency         | -                |

## Carrier board comparison <a href="#toc127805520" id="toc127805520"></a>

Auvidea provides a variety of compatible boards for the AGX Xavier and AGX Orin. The following table tries to help you find the best fitting carrier board for your needs. For more in depth information about each board, please see the respective manual.

| Description                             | AGX Xavier compatible | AGX Orin compatible |
| --------------------------------------- | --------------------- | ------------------- |
| extendable carrier board with M222, etc | X221                  | X230                |
| Developer series (fixed function)       | X221D                 | X230D               |
| X231 = X230 plus 2x PCIe x8 connector   | -                     | X231                |

The following table shows the features and differences in more detail

<table data-full-width="true"><thead><tr><th></th><th width="190">AGX Xavier</th><th width="169">AGX Xavier</th><th width="168">AGX Orin</th><th>AGX Orin</th></tr></thead><tbody><tr><td>Compatible board</td><td>X220</td><td>X221D</td><td>X230D</td><td>X230/X231</td></tr><tr><td>Recommended configuration</td><td>config 2</td><td>config 2</td><td>config 2</td><td>config 2</td></tr><tr><td>UPHY_RX0/TX0</td><td>PCIe x1</td><td> </td><td>PCIe x1 FPC</td><td>GbE 2</td></tr><tr><td>UPHY_RX1/TX1</td><td>USB 3 (ext. optional)</td><td>USB 3 FPC 12p</td><td>USB 3 Type A</td><td>USB 3 Type A</td></tr><tr><td>UPHY_RX20/TX20</td><td> </td><td> </td><td>USB 3 Type A</td><td>USB 3 Type A</td></tr><tr><td>UPHY_RX21/TX21</td><td> </td><td> </td><td>GbE 1</td><td>GbE 1</td></tr><tr><td>UPHY_RX22/TX22</td><td> </td><td> </td><td>GbE 2</td><td>M.2 NVME (C4), RP</td></tr><tr><td>UPHY_RX23/TX23</td><td> </td><td> </td><td> </td><td>M.2 NVME (C4), RP</td></tr><tr><td>UPHY_RX10/TX10</td><td>UFS</td><td>UFS</td><td> </td><td>M.2 NVME (C4), RP</td></tr><tr><td>UPHY_RX11/TX11</td><td>USB 3 Type A</td><td>USB 3 Type A</td><td> </td><td>M.2 NVME (C4), RP</td></tr><tr><td>UPHY_RX11/TX11</td><td>M.2 NVME</td><td>M.2 NVME</td><td>M.2 NVME</td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX13/TX13</td><td>M.2 NVME</td><td>M.2 NVME</td><td>M.2 NVME</td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX14/TX14</td><td>M.2 NVME</td><td>M.2 NVME</td><td>M.2 NVME</td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX15/TX15</td><td>M.2 NVME</td><td>M.2 NVME</td><td>M.2 NVME</td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX16/TX16</td><td> </td><td> </td><td> </td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX17/TX17</td><td> </td><td> </td><td> </td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX18/TX18</td><td> </td><td> </td><td> </td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX19/TX19</td><td> </td><td> </td><td> </td><td>PCIe x8 (C5), RP/EP</td></tr><tr><td>UPHY_RX2/TX2</td><td>PCIe x4 on extension connector (for 38451 add-on)</td><td>PCIe x4 FPC (J20)</td><td>PCIe x4 FPC (J20)</td><td>PCIe x8 (C7), RP/EP</td></tr><tr><td>UPHY_RX3/TX3</td><td></td><td></td><td></td><td>PCIe x8 (C7), RP/EP</td></tr><tr><td>UPHY_RX4/TX4</td><td></td><td></td><td></td><td>PCIe x8 (C7), RP/EP</td></tr><tr><td>UPHY_RX5/TX5</td><td></td><td></td><td></td><td>PCIe x8 (C7), RP/EP</td></tr><tr><td>UPHY_RX6/TX6</td><td>USB 3 Type A</td><td>USB 3 Type A</td><td> </td><td>PCIe x8 (C7), RP/EP</td></tr><tr><td>UPHY_RX7/TX7</td><td>GbE 1</td><td>GbE 1</td><td> </td><td>PCIe x8 (C7), RP/EP</td></tr><tr><td>UPHY_RX8/TX8</td><td>GbE 2</td><td>GbE 2</td><td> </td><td>PCIe x8 (C7), RP/EP</td></tr><tr><td>UPHY_RX9/TX9</td><td> </td><td> </td><td> </td><td>PCIe x8 (C7), RP/EP</td></tr></tbody></table>