ASUS RT-AX1800U: OpenWrt Compatibility Report
The ASUS RT-AX1800U runs OpenWrt 24.10.5 on the ramips/mt7621 target, and has been supported since 22.03.0. Its WiFi 6 (AX) wireless on the mt76 driver rates good for open-source driver support (0.80/1.0), installation is rated moderate, and it is still sold new.
Hardware data and retail listings last checked .
Where to buy
- WiFi-Stock EU retailer, USD pricing, MPN RT-AX1800U, sold out 0 pcs 2026-08-09 Currently out of stock $44
- MyZ Computers UAE retailer, AED 149.63, 0 available 2026-08-09 Currently out of stock
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Specifications
| SoC | MediaTek MT7621A |
|---|---|
| CPU | 2 cores @ 880 MHz |
| RAM | 256 MB |
| Flash | 128 MB (NAND) |
| Ethernet ports | 4 |
| USB | 1x 2.0 |
| WiFi generation | WiFi 6 (AX) |
| Radios | 2.4GHz: b/g/n/ax · 5GHz: a/n/ac/ax |
| WLAN hardware | MediaTek MT7905, MediaTek MT7975 |
| WLAN driver | mt76 |
| OpenWrt target | ramips / mt7621 |
| Package architecture | mipsel_24kc |
| Current release | 24.10.5 |
| Supported since | 22.03.0 |
| Install difficulty | moderate |
| Power supply | 12 VDC, 1.5A via barrel |
| Device type | Home router |
| Estimated throughput | 220 Mbps |
| Availability | available |
Installing OpenWrt on the RT-AX1800U
Installation on this device is rated moderate. Expect to use a recovery mode, TFTP or a vendor tool rather than a plain web upload.
Official OpenWrt device page for the RT-AX1800U
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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