MikroTik RBM33G: OpenWrt Compatibility Report
The MikroTik RBM33G runs OpenWrt 25.12.2 on the ramips/mt7621 target, and has been supported since 18.06.0. Its No WiFi wireless on the none driver rates fair for open-source driver support (0.50/1.0), installation is rated moderate, and it is still sold new.
Hardware data and retail listings last checked .
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Specifications
| SoC | MediaTek MT7621A |
|---|---|
| CPU | 2 cores @ 880 MHz |
| RAM | 256 MB |
| Flash | 16 MB |
| Ethernet ports | 3 |
| USB | 1x 3.0 |
| WiFi generation | No WiFi |
| WLAN driver | none |
| OpenWrt target | ramips / mt7621 |
| Package architecture | mipsel_24kc |
| Current release | 25.12.2 |
| Supported since | 18.06.0 |
| Install method | see devicepage, see git-commit |
| Install difficulty | moderate |
| Power supply | 11-32 VDC barrel jack, 11-32 VDC Passive PoE |
| Device type | Wired only |
| Estimated throughput | 220 Mbps |
| Availability | available |
Installing OpenWrt on the RBM33G
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 devicepage, see git-commit.
Official OpenWrt device page for the RBM33G
Flashing third-party firmware can brick a router and usually voids the warranty. Always check that the firmware image matches your exact hardware version.
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