$30 Raspberry Pi CM4 IoT Router Carrier Board Mini offers Dual Gigabit Ethernet

We’ve recently written about Seeed Studio’s “Dual Gigabit Ethernet Carrier Board for Raspberry Pi Compute Module 4” that offers dual Gigabit Ethernet, and two USB 3.0 ports for software router applications, but it can also be used for IoT, Smart Home, and camera projects, as well as HTPC maker thanks to micro HDMI output and MIPI DSI/CSI connector. It is sold for an affordable $45, exceeding the Raspberry Pi CM4 module.

But if all you want to do is get a dual Gigabit Ethernet WiFi router or IoT gateway, DFRobot has now introduced a more compact and cheaper carrier board for Raspberry Pi CM4: “Compute Module 4 IoT Router Carrier Board Mini“.

CM4 IoT Carrier Board Mini

CM4 IoT Router Board Mini specifications:

  • Compatible Module – Raspberry Pi Compute Module 4 / 4 Lite with Broadcom BCM2711 quad-core Cortex-A72 processor, up to 8GB RAM, up to 32GB flash, optional 802.11b/g/n/ac WiFi 5 and Bluetooth 5.0
  • Storage – MicroSD card slot for RPi CM4 modules without eMMC flash
  • Connectivity
    • Dual Gigabit Ethernet via built-in BCM2711 and PCI Express 1000BASE-T controller
    • Optional WiFI 5 and Bluetooth 5.0 via Raspberry Pi CM4 module
  • USB – 1x USB-C 2.0 port, 1x USB-C port for power only
  • Expansion – 26-pin Raspberry Pi compatible GPIO header
  • Misc – Power and Act LEDs, Reset button, button mode selector
  • Power Supply – 5V/3A via USB-C port
  • Dimension 62 x 55mm
  • Temperature – 0°C to 80°C

Dual Gigabit Ethernet Raspberry Pi CM4

The lack of USB 3.0 ports may be a disappointment to some, but it’s actually an advantage for router applications, as USB 3.0 would have taken the PCIe interface of the Broadcom BCM2711 processor, and instead, it is reserved for the second Gigabit Ethernet port which should deliver improved performance compared to other designs.

DFRobot recommends OpenWrt for the board, but it can also run Raspberry Pi OS, Ubuntu Server, and other operating systems compatible with Raspberry Pi CM4. An enclosure will also be offered.

DFRobot CM4 socket

DFRobot’s Compute Module 4 IoT Router Carrier Board Mini is up for pre-order for $30, and less for two units or more, with delivery scheduled to start in mid-April. That means you could get a complete router board for about $60 once we take into account the price with the Raspberry Pi CM4 module and storage. It’s all good if you really need the Raspberry Pi ecosystem, but if all you’re after is a Linux capable dual Gigabit Ethernet board, boards like Orange Pi R1 Plus or NanoPi R2S will offer similar performance at a much lower cost (around $30). Performance should even be quite better for anything (e.g. VPN) using Armv8 Crypto extensions since those are missing in the Broadcom BCM2711 processor.

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Giga_LAN
Giga_LAN
26 days ago

WOW!!

Anonymous
Anonymous
26 days ago

Dual_Giga_LAN downvoted you.

Giga_LAN
Giga_LAN
26 days ago

? It wasn’t ironic. I’ve been waiting for something like this…

tkaiser
tkaiser
25 days ago

Even if all we know now is ‘PCI Express 1000BASE-T controller’ (no specific chipset/revision mentioned)?

Giga_LAN
Giga_LAN
25 days ago

sure, I was happy too quickly

Zamir
Zamir
26 days ago

The NanoPi R2S redirects to Orange Pi R1 Plus article. I think it is not intended 😉

Mark
Mark
25 days ago

If this runs OPNsense this will be terrific for home firewall

unmesh
unmesh
25 days ago

Pretty sure OPNsense and the like are AMD64 based

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