Radxa CM3 IO: OpenWrt Compatibility Report
The Radxa CM3 IO runs OpenWrt 25.12.1 on the rockchip/armv8 target, and has been supported since 24.10.0. Its WiFi 5 (AC) wireless on the brcmfmac driver rates fair for open-source driver support (0.60/1.0), installation is rated moderate, and it is still sold new.
Drivers: Fair (0.60)
WiFi 5 (AC) Install: moderate
Hardware data and retail listings last checked .
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Specifications
| SoC | Rockchip RK3566 |
|---|---|
| CPU | 4 cores @ 1800 MHz |
| RAM | 2048 MB |
| Ethernet ports | 1 |
| USB | 2x 2.0, 1x 3.0 |
| WiFi generation | WiFi 5 (AC) |
| Radios | 2.4GHz: b/g/n · 5GHz: a/n/ac |
| WLAN hardware | Cypress CYW43455 (AzureWave AW-CM256SM) |
| WLAN driver | brcmfmac |
| OpenWrt target | rockchip / armv8 |
| Package architecture | aarch64_generic |
| Current release | 25.12.1 |
| Supported since | 24.10.0 |
| Install method | see git-commit |
| Install difficulty | moderate |
| Power supply | 12V, 3A |
| Device type | Access point |
| Estimated throughput | 1000 Mbps |
| Availability | available |
Installing OpenWrt on the CM3 IO
Installation on this device is rated moderate. Expect to use a recovery mode, TFTP or a vendor tool rather than a plain web upload. Documented methods: see git-commit.
Flashing third-party firmware can brick a router and usually voids the warranty. Always check that the firmware image matches your exact hardware version.
Other routers to consider
Ruckus R500
WiFi 5 (AC) Drivers: Excellent $173
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WiFi 5 (AC) Drivers: Excellent $115
Ubiquiti UniFi UK-Ultra
WiFi 5 (AC) Drivers: Excellent $100
Not sure which fits? Take the 60-second quiz.