ZyXEL LTE7490-M904: OpenWrt Compatibility Report
The ZyXEL LTE7490-M904 runs OpenWrt 25.12.2 on the ramips/mt7621 target, and has been supported since 25.12.0. Its WiFi 4 (N) wireless on the mt76 driver rates good for open-source driver support (0.80/1.0), installation is rated easy, and it is no longer sold new.
Hardware data and retail listings last checked .
Where to buy
We have no current retail listing for the ZyXEL LTE7490-M904, which is no longer sold new. See current alternatives for devices you can still buy today.
Specifications
| SoC | MediaTek MT7621AT |
|---|---|
| CPU | 2 cores @ 880 MHz |
| RAM | 256 MB |
| Flash | 128 MB (NAND) |
| Ethernet ports | 1 |
| WiFi generation | WiFi 4 (N) |
| Radios | 2.4GHz: b/g/n |
| WLAN hardware | MediaTek MT7603E |
| WLAN driver | mt76 |
| OpenWrt target | ramips / mt7621 |
| Package architecture | mipsel_24kc |
| Current release | 25.12.2 |
| Supported since | 25.12.0 |
| Install method | GUI OEM, see git-commit |
| Install difficulty | easy |
| Power supply | PoE 802.3at 13W max |
| Device type | Home router |
| Estimated throughput | 220 Mbps |
| Availability | discontinued |
Installing OpenWrt on the LTE7490-M904
Installation on this device is rated easy. You can flash it from the stock web interface without opening the case or using a serial cable. Documented methods: GUI OEM, see git-commit.
Official OpenWrt device page for the LTE7490-M904
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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