Linksys WRT1900ACS: OpenWrt Compatibility Report
The Linksys WRT1900ACS runs OpenWrt 25.12.5 on the mvebu/cortexa9 target, and has been supported since 15.05. Its WiFi 5 (AC) wireless on the mwlwifi driver rates good for open-source driver support (0.75/1.0), installation is rated moderate, 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 Linksys WRT1900ACS, which is no longer sold new. See current alternatives for devices you can still buy today.
Specifications
| SoC | Marvell Armada 385 88F6820 |
|---|---|
| CPU | 2 cores @ 1600 MHz |
| RAM | 512 MB |
| Flash | 128 MB (NAND) |
| Ethernet ports | 5 |
| USB | 1x 2.0, 1x 3.0 |
| WiFi generation | WiFi 5 (AC) |
| Radios | 2.4GHz: b/g/n · 5GHz: a/n/ac |
| WLAN hardware | Marvell 88W8864 |
| WLAN driver | mwlwifi |
| OpenWrt target | mvebu / cortexa9 |
| Package architecture | arm_cortex-a9_vfpv3-d16 |
| Current release | 25.12.5 |
| Supported since | 15.05 |
| Install method | see devicepage |
| Install difficulty | moderate |
| Power supply | 12 VDC, 3.0A via barrel |
| Device type | Home router |
| Estimated throughput | 560 Mbps |
| Availability | discontinued |
Installing OpenWrt on the WRT1900ACS
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.
Image name may need to be changed to OEM Code Name. Check Connectivity -> Router Firmware Update -> Automatic
Official OpenWrt device page for the WRT1900ACS
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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