# C1902 Introduction
[  ](https://www.linkzeelabs.com/wiki/uploads/images/gallery/2025-11/Z9dimage.png)
#### **Introduction**
The C1902 is a development board specifically designed for Jetson Orin Nano & NX modules. Built on a standard board design, it fully supports the official developer kit's features, including full-speed USB3.0 and Type-C ports.
[](https://www.linkzeelabs.com/wiki/uploads/images/gallery/2026-03/jn20q7a9986.jpg)
**正面**
---
[](https://www.linkzeelabs.com/wiki/uploads/images/gallery/2026-03/DcW0q7a9573.jpg)
**背面**
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#### **Fearture**
- C1902 was developed based on the original manufacturer's solution, with all interface functions matching the original manufacturer's and supporting direct firmware flashing via Developer Kit
- Compatible with NVIDIA® Jetson Orin Nano (4GB/8GB) and Orin NX (8GB/16GB) modules.
- Premium 6-layer gold-plated PCB with full MLCC capacitors and gold-plated connectors
- Supports M.2 NVMe SSD and M.2 Wi-Fi module
#### **History**
| **Version**
| **Date**
| **Description**
|
| V1.0
| 2024 Q3
| The first version of C1902
|
| V1.1
| 2025 Q1
| 1. Fixed a GPIO issue that previously caused pins 12/35/38/40 to be unavailable under the original device tree.
2. Enhanced support for the SUPER mode across the entire ORIN NANO/NX series
|
| V1.1.1
| 2025 Q2
| 3. Modify the DC power input socket specifications from DC5521 to DC5525
|
| Supply Voltage
| 12V (compatible with 9-19V)
|
| Operating Temperature
| 0℃~45℃
|
| Supported Module
| Orin Nano 4G/8G
Orin NX 8G/16G
|
| Power Connector
| DC5525
|
| Ethernet
| 1x Gigabit Ethernet Socket (RJ45)
|
| Wireless Network Adapter
| 1x M.2 Key E
|
| External Storage
| 2x M.2 Key M (NVME SSD)
|
| DisplayPort
| 1x DP V1.2
|
| USB
| 4x USB3.2 (10Gbps)
|
| USB C
| 1x Type C (USB3.0)
|
| Camera
| 2x CSI-22P
|
| Other
| Consistent with original specs
|
| RTC
| support
|
| POE
| not supported
|
-
The carrier board requires a 12V(compatible with 9-19V) DC power supply. To ensure normal system operation, a power adapter with sufficient current output must be used. Additionally, under high load conditions with an input voltage exceeding 15V, adequate heat dissipation must be provided to prevent overheating.
-
This product includes reverse-polarity protection. Nevertheless, do not connect the power supply in reverse.
-
The over-current protection (OCP) threshold for all USB ports is 2.5A. Exceeding this limit will trigger an automatic shutdown of the power output.
-
In contrast to the original M.2 2230 interface, the backplane's network interface now features a symmetrical layout.
-
Do not hot-swap the module. Always power off the board before inserting or removing the module. Failure to do so may damage the module and the carrier board. Damage caused by improper operation is not covered under warranty.
---
| Original
| C1901 V1.3
| C1902 V1.1
|
| Supply Voltage
| 19V
| 12V (compatible with 9-19V)
| 12V (compatible with 9-19V)
|
| Power Connector
| DC5525
| DC5521 (compatible with DC5525)
| DC5525
|
| Ethernet
| 1x Gigabit Ethernet Socket (RJ45)
| 1x Gigabit Ethernet Socket (RJ45)
| 1x Gigabit Ethernet Socket (RJ45)
|
| Wireless Network Adapter
| 1x M.2 Key E
| 1x M.2 Key E
| 1x M.2 Key E
|
| External Storage
| 2x M.2 Key M
| 2x M.2 Key M
| 2x M.2 Key M
|
| Display
| 1x DP V1.2
| 1x HDMI (1080P)
| 1x DP V1.2
|
| USB
| 4x USB3.0
| 3x USB3.0+1 xUSB2.0 (requires device tree modification)
| 4x USB3.0
|
| USB C
| 1x Type C (USB3.0)
| 1x Type C (USB2.0)
| 1x Type C (USB3.0)
|
| Camera
| 2x CSI-22P
| 2x CSI-22P
| 2x CSI-22P
|
| RTC
| Not Supported
| Supported
| Supported
|
| Other
| -
| Match the original
| Match the original
|
| POE
| Supported (Not Populated)
| Not Supported
| Not Supported
|
| SUPER
Mode
| Only ORIN NANO series is supported
| Only ORIN NANO series is supported
| Supports the ORIN Nano/NX series
|
---
| **1**
| Power Jack
| **9**
| Camera (#0) Connector (22p, 0.5 mm)
|
| **2**
| DP Connector
| **10**
| Power Button
|
| **3**
| USB 3.0 Type A(x2 Stacked)
| **11**
| Button Header (1x12, 2.54 mm)
|
| **4**
| USB 3.0 Type A(x2 Stacked)
| **12**
| CAN Bus Header (1x4, 2.54 mm)
|
| **5**
| RJ45 Ethernet Socket
| **13**
| Fan Header
|
| **6**
| USB Type C
| **14**
| 40-pin Expansion Header(2x20, 2.54 mm)
|
| **7**
| Jetson Orin Module Connector
| **15**
| Power LED
|
| **8**
| Camera (#1) Connector (22p, 0.5 mm)
| | |
| **16**
| RTC Socket
| **18**
| M.2 Key M Socket (4-lane)
|
| **17**
| M.2 Key E Socket (75-pin)
| **19**
| M.2 Key M Socket (2-lane)
|
---
##### Feature Deatial
- Power Button **(10)**: The C1902 incorporates an additional function button not present on the reference board. Its operation is as follows:
System Running:A short press enters the shutdown menu; a long press (10 seconds) forces a power-off.When the system is off: press once to power on.
System Off: A short press powers on the system.
- Expansion Header **(14)****: **The 40-pin GPIO header provides a 5V output rail with reverse current protection. It supports a maximum current of 0.8A and is safeguarded by over-current protection (OCP), which automatically disables the output upon detecting a fault. Actual performance depends on the specific system-on-module (SOM) in use. Please refer to the specifications below.
[ ](https://www.linkzeelabs.com/wiki/uploads/images/gallery/2025-10/C6Pimage.png)
Reference link: [https://jetsonhacks.com/pinouts/](https://jetsonhacks.com/pinouts/)
- The 12Pin Header **(11) **is defined as follows:
[  ](https://www.linkzeelabs.com/wiki/uploads/images/gallery/2025-07/Mwgimage.png)
- The RTC battery port (16) on the C1902 board features an additional MX1.25-2P connector compared to the original factory board. When using RTC batteries, ensure correct polarity and avoid reverse connections.
After connecting the battery, configure the device to enable RTC clock. For details on RTC configuration and UART interface usage, please refer to[ RTC 说明](https://www.linkzeelabs.com/wiki/books/orin-nano/page/5ef69#bkmrk-4.-rtc%E6%8E%A5%E5%8F%A3)
---
#### Mechanical Dimensions (mm)
[  ](https://www.linkzeelabs.com/wiki/uploads/images/gallery/2025-11/P6Fimage.png)
| **Screw Location**
| **Recommended Specification**
| **Note**
|
| Carrier Board Mounting Holes
| M2.5 screws or standoffs
| The diameter of the screw or standoff must not exceed 5mm.
|
| Module
| M2.5 × 4 pan head screws
| |
| Hard Drive & Network Card
| M2.5 × 4 pan head screws
| Pan head screws are recommended.
|
- [Jetson Orin C1902 刷机教程](https://www.linkzeelabs.com/wiki/books/68839/page/c1902)
- [Jetson 基础教程](https://www.linkzeelabs.com/wiki/books/orin-nano/chapter/jetson-orin)
- [JetPack 配置说明](https://www.linkzeelabs.com/wiki/books/orin-nano/chapter/jetpack)
- [Jetson AI 视觉教程](https://www.linkzeelabs.com/wiki/books/orin-nano/chapter/jetson-orin-ai)
- [Jetson 大模型教程](https://www.linkzeelabs.com/wiki/books/orin-nano/chapter/jetson-orin-xEW)
- [C1901/1902 USB 设备树替换说明](https://www.linkzeelabs.com/wiki/books/orin-nano/page/c19011902-usb)