We’re now roughly 4 months after the day that the Raspberry Pi Foundation launched the highly anticipated Compute Module 4. Launch day already included some carrier boards that were in development, so now may be a good time to look back and see their availability, plus we’ll also look for any other great boards that are in development or may have hit the scene.

Raspberry Pi Compute Module 4 IO Board

Off course there is always the official carrier board of the Raspberry Pi foundation. If offers great connectivity at a very low price. It’s unsurprisingly also one of the most favorable boards out there.

Price: $30
Availability: now
More info: https://www.raspberrypi.org/products/compute-module-4-io-board

Raspberry Pi 400

The highly anticipated Raspberry Pi 400 features a CM4 module within a keybpard housing, making it a full blown desktop at no cost at all regarding space on your desk.

Price: $70
Availability: now
More info: https://www.raspberrypi.org/products/raspberry-pi-400/

Gumstix CM4 Uprev & UprevAI CM3 adapter board

This board comes in 2 flavors, one with an Google Coral AI TPU, and one without. The board is not a real carrier board but acts more as a converter to the CM3 DIMM connector.

Price: $30 ($75 for the UprevAI)
Availability: pre-order
More info (Uprev): https://www.gumstix.com/manufacturer/raspberry-pi/cm4-uprev.html
More info (UprevAI): https://www.gumstix.com/manufacturer/raspberry-pi/cm4-uprev-ai.html

Gumstix Raspberry Pi CM4 Development Board

Very decently packed dev-board which exposes the traditional RPI pins, plus dual PI camera connectors, HDMI out, touchscreen connectors, PCIe M2 connector, usb,, usb device, reset button, user button, Gigabit ethernet, console over USB.

Price: $130
Availability: backordered
More info: https://www.gumstix.com/manufacturer/raspberry-pi/cm4-development-board.html

Gumstix Raspberry Pi CM4 PoE Smart Camera

This board is specially design for the computer vision fanatics. It’s focussed on small size, while still offering all the goodies you wish for object recognition and other sorts of vision and ai applications. It features Power over ethernet and a Google Edge TPU ML chip

Price: $90
Availability: pre-order
More info: https://www.gumstix.com/manufacturer/raspberry-pi/cm4-poe-smart-camera.html

Gumstix Raspberry Pi CM4 + Pixhawk FMUv6U

With a focus on rovers and robotics, this board features dual raspberry Pi Camera connectors, Serial console over USB, USB Type-C power delivery, STMicro STM32H753 MCU, Pixhawk GPS, analog power, RC, and CAN connectors, 8 PWM outputs, accelerometer, magnetometer and gyroscope, barometer and a Google Edge TPU.

Price: $180
Availability: pre-order
More info: https://www.gumstix.com/manufacturer/raspberry-pi/cm4-pixhawk-fmuv6.html

StereoPi v2

This board is focussing on compact dual camera use cases. It comes with dual Pi camera connectors, Gigabit ethernet, 2xUSB, USB-C, power switch, microHDMI, microSD, and various status LEDs.

Price: n/a
Availability: ? (soon?)
More info: https://www.crowdsupply.com/stereopi/stereopi-v2

Techbase Modberry CM4

The Modberry CM4 comes in 3 flavors: mini, standard, and max. The mini version offers a 2x eth, USB, RTC, 4 Digital Inputs, 4 Digital Outputs, 1-wire, one RS232/485 port. Standard adds another RS232/485 ports, 4 extra DIO, 1x PCIe, and optionally HDMI. The max version adds another PCIe, 4x AD converters, optionally CAN and HDMI. Furthermore Techbase also has a wide base of extension boards

Price: $272
Availability: 3~4 weeks
More info: https://iiot-shop.com/wp-content/uploads/2020/10/ModBerry_500CM4_EN.pdf

Turing Pi 2

Aiming for clustering use cases, the Turing Pi offers up to 4 CM4 slots all handled by an internal layer 2 switch. There is also room for 2x M2 PCIe SSDs, 2x ethernet, HDMI, audio, 4xUSB, DSI, I2C, fan headers and 2 SATA3 ports.

Price: n/a
Availability: 2021
More info: https://turingpi.com/v2/

Techbase ClusBerry CM4

Like the Turing Pi 2, the ClusBerry CM4 is focussed on clustering applications. The ClusBerry 9500-CM4 supports up to 8 cluster modules. Each such clustering module has different purposes: The Standard cluster module packs an CM4 module with a IO controller (DI, DO, 1-wire, RS232/485, CAN), wired/wireless communication (1/2x eth, serial ports, LTE-cat.M1, 4G, 5G, LoRa, ZigBee, Z-Wave, Wireless M-bus) and an AI gateway (Google Coral AI). Other module throws in more features such as NAS file server(2x/4x SATA3 and RAID), USB3.0 hub, Gigabit LAN/WLAN router, SuperCap power management (sort of UPS) and more expansion boards with DIO, AIO, serial ports, sensors, etc.

Price: n/a
Availability: 2021
More info: https://clusberry.techbase.eu/#clusberry

Techbase Modberry AI Gateway 9500-CM4

A ready to go device that aside of the CM4 also features a Google Coral AI processor. It’s housing is industrial grade DIN rail ready. It also has supercap backup support.

Price: n/a
Availability: 2021
More info: https://iiot-shop.com/product/ai-gateway/

Pi-oT 2 Precision Series

The Pi-oT 2 is focussed on automation use cases. It nicely finished housing offers access to 4x 24V Digital Inputs, 6 x 50v 500mA Digital Output (open collector), 8 channel analog inputs, a RS-485 port and ethernet. The housing also includes a LiFoPO4 battery pack based UPS that’s able to run the PI for up to 2 hours! While technically not using a CM4 module, it well could have been.

Price: under $200
Availability: 2021
More info: https://www.kickstarter.com/projects/pi-ot/pi-ot-2-precision-series/

Wiretrustee SATA board

While many other boards are focussing on industrial use cases, clustering or computer vision, this Wiretrustee board focussed mostly on providing a solid storage experience. It features 1xGb Eth, HDMI, 2x USB 2.0, microSD, USB-C and up to 4x SATA (incl. power)!

Price: n/a
Availability: 2021
More info: https://wiretrustee.com/

Sourcekit PiTray mini

This carrier board bring the CM4 into roughly the same form factor as the normal Raspberry Pi4. Feature wise there is nothing special here, though it is probably the cheapest carrier board out there at the moment.

Price: $ 14.50
Availaiblity: now
More info: https://www.dfrobot.com/product-2196.html

CM4_MATX

The goal of this board is to finally bring the Raspberry Pi into micro-ATX computing form factor. It should allow people to use all sorts of mini-desktop housing for their favorite ARM based processor board.

Price: n/a
Availability: work in progress
More info: https://github.com/TheGuyDanish/CM4_MATX

Pi-Keeb

The board comes close to the official Raspberry Pi keyboard, but offers mechanical keys instead.

More info: https://www.reddit.com/r/PiKeeb/

Piunora

This little board is a bit like the PiTray, but instead also comes with a M2 connector on the rear so that you can pack it with you M2 SSD of choice. It also comes with a Google Coral chip and it has the Arduino UNO R3 headers instead of the normal Pi headers.

Price: n/a
Availability: 2021
More info: https://www.crowdsupply.com/diodes-delight/piunora

CM4-NAS

This board is a compact one that mostly focussing on small size while still exposing the PCIe bu. It is still in development.

More info: https://github.com/mebs/CM4-NAS

MicroPC

Availability: unknown
More info: https://hackaday.io/project/177626-mirkopc-cm4-carrier-board

Minimal carrier board

This Czech board is a compact sized cheap alternative for the official IO board.

Price: $15
Availability: now
More info: https://www.tindie.com/products/dronecz/minimal-carrier-board-for-compute-module-4/

Over:Board

Yet another micro-ATX carrier board, but this one for now seems already a bit more complete.

Price: n/a
Availability: 2021
More info: https://www.indiegogo.com/projects/over-board-raspberry-pi-4-mini-itx-motherboard/#/

oratek TOFU

This industrial grade board features all sorts of IO that you’d expect from an industrial (edge) device. Adverticed as the “compatibility king” the board supports flexible power input (7.5-28V), a M2M connector for SSD, LTE, GPS Coral modules etc., 3 USB-A ports, 1Gbit eth (PoE), 40 pin Raspberry Pi GPIO header, HDMI (full-size), MIPI camera and display ports, mucroSD slot, USB-C (OTG)

Price: $109
Availability: pre-order, (available mid 2021)
More info: https://store.oratek.com/products/tofu

CM Hunter

Another board targeting the industrial market, the CM Hunter features isolated CAN, RS485 and 1-wire buses over most other boards we’ve previously discussed. They also offer an RTC, 10A relay, fan on-board fan connector, support for a SPI touch display and their own branch of Raspian.

Price: $120
Availability: mid 2021
More info: https://www.kickstarter.com/projects/andreasebrle/raspberry-compute-module-4-carrier-board-with-iso-interfaces?ref=ksr_email_user_watched_project_launched

Seeed Studio Dual Ethernet Carrier Board

The SeeedStudio board is the first board to feature dual gigabit ethernet ports. It uses the Microchip LAN7800 USB3 to Gbit Ethernet Controller, combined with a compact size, Micro HDMI, MIPI ports and USB-power makes this well suited for building a software LAN switch, compact Media Center to use it in one of your camera projects.

Price: $45
Availability: 15 april 2021
More info: https://www.seeedstudio.com/Rapberry-Pi-CM4-Dual-GbE-Carrier-Board-p-4874.html?utm_source=cnx_software&utm_medium=link&utm_campaign=cnx_software

Mcuzone CM-4G

This is another board with features dual Ethernet ports, one 1000Mbps, the other 100Mbps. That aside, the board is also very feature-full. It comes with dual USB2 ports, HDMI, USB-C, USB OTG, SIM nad optional voice. The board can be delivered with a 4G LTE modem of choice, and can even be bought with a nice industrial looking housing. All together this combo makes it a nice product that should help you dive into the realms of wireless LTE connectivity. Only downside is that the board at this moment

Price: up to $129 including LTE module
Availability: now
More info: https://www.aliexpress.com/item/1005001972265702.html

Onlogic One Tough Pi

This CM4 based device is still very much in development, hence it was merely released as a teaser for Pi-day. For now Onlogic seems to target industrial customers with its DIN-rail housing. Yet, from its looks so far it may also find its ways into places and use cases. The device will feature dual Gbit Ethernet, 1x RS232/422/485, 1x Micro USB OTG, 1x Micro HDMI, 3USB ports (of which one is USB 3.1) and M.2 SATA storage.

Price: ?
Availability: 2021
More info: https://www.onlogic.com/industrial-raspberry-pi

CutiePi tablet

The CutiePi Tablet is an off-the-shelve solution for open-source linux tablets, and now features the more powerful CM4 compute unit. The CutiePi combines the CM4Lite (BLE/Wifi) with a 1280×800 8″ LCD, a 5MP rear-facing camera, USB-A and USB-C, micro HDMI, microSD and 5000mAh Li-Po battery. The OS is not surprisingly the Raspberry Pi OS but features a custom QT based shell.

Price: $199
Availability: july 2021
More info: https://shop.cutiepi.io/products/cutiepi-tablet

The list so far is pretty impressive considering all the different use cases that’re being covered, and more boards are added each month. Availability is still something that will need to improve, but with the CM4 product launch just few months behind us it’s already very pleasing the see where are the creativity is taking us. A big thumps up for the various people out making this all come true.
PS: if there would be any board missing from my list, please let me know, I’d be happy to add it!