Seeed Studio’s reComputer J101 & J202 are carrier boards with a similar form factor as the ones found in NVIDIA Jetson Nano and Jetson Xavier NX developer kits, but with a slightly different feature set.
The reComputer J101 notably features different USB Type-A/Type-C ports, a microSD card, takes power from a USB Type-C port, and drops the DisplayPort connector, while the reComputer J201 board replaces the micro USB device port with a USB Type-C port, adds a CAN Bus interface, and switches to 12V power input instead of 19V.
The table below summarizes the features and differences between the Jetson Nano devkit (B1), reComputer J101, Jetson Xavier NX devkit, and reComputer J202.
| Feature | Jetson Nano Dev Kit(B01) | reComputer J101 | Jetson Xavier NX Devkit | reComputer J202 |
|---|---|---|---|---|
| Module Compatibility | Jetson Nano 4GB (non-production version) | Jetson Nano series | Jetson Xavier NX 8GB (non-production version) | Jetson Nano/Xavier NX/TX2 NX |
| Display | HDMI + DisplayPort | HDMI | HDMI + DisplayPort |
|
| CSI camera | 2x MIPI CSI |
|||
| Ethernet | 1x Gigabit Ethernet port |
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| USB | 4x USB 3.0 Type-A (5Gbps) 1x Micro USB (Device mode) | 1x USB 3.0 Type-A port (5 Gbps) 2x USB 2.0 Type-A ports 1x USB Type-C (Device mode) 1x USB Type-C (Power In only) | 4x USB 3.1 Type-A ports (10Gbps) 1x Micro USB (Device mode) | 4x USB 3.1 Type-A ports (10Gbps for NX, 5Gbps for Nano) 1x USB Type-C (Device mode) |
| M.2 Key M | N/A | 1x M.2 Key M |
||
| MicroSD card | N/A | MicroSD card slot (48MHz CLK Frequency) | N/A |
|
| M.2 Key E | 1x M.2 Key E |
|||
| Fan | Fan connector |
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| CAN | N/A | (reserved) | 1x CAN bus | |
| I/O ports | 40-pin header 12-pin header |
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| RTC | RTC socket (reserved) | 2-pin RTC socket | RTC socket (reserved) | 2-pin RTC socket |
| Power Supply | 5V/4A (5.5/2.5mm barrel jack) or 5V/2A (Micro USB) PSU not included | 5V/3A (USB Type C) PSU not included | 19V/4.74A (5.5/2.5mm barrel jack) Power cord provided | 12V/5A (5.5/2.1mm barrel jack) Power cord provided, power adapter as an option |
| Dimensions | 100x80 mm |
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Note the official Jetson board should also support production SoM with eMMC flash, but they do ship with a non-production SoM with a built-in MicroSD card socket instead.
The carrier boards are so similar that if NVIDIA would actually sell the carrier board for its developer kits separately, it would be hard to justify getting reComputer J101/J201 boards unless potentially you’d need a specific feature like CAN Bus or somehow you prefer other power options. [Update: That’s another supply shortage story, as based on a video from Waveshare that made a similar board, NVIDIA Nano Developer Kit is not available anymore and out of stock “due to global chip shortages”, while the Jetson SoM are still broadly available]
If you’re interested, Seeed Studio sells the reComputer J101 for $69, while the reComputer J201 carrier board goes for $131 or $139 with a 12V power adapter.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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