Check compatibility for dual Wi-Fi adapters with Asus RT-AC57U.
Check compatibility for dual Wi-Fi adapters with Asus RT-AC57U.
At first I bought a budget router with AC Wi-Fi just to get decent speeds over wireless N. After some network issues, I switched my WAN cables to a 4G modem for remote work. This works temporarily, but I’d like the network to automatically switch back to my regular fiber when service comes back. I’m unsure if the router supports dual-WAN failover without buying a new device, though I’m open to trying a workaround or software fix.
It's possible with OpenWRT installation and some training. The process requires learning networking concepts, so it's a bit challenging if you're new to that area. You can find more details here: https://openwrt.org/toh/asus/asus_rt-ac57u and https://openwrt.org/docs/guide-user/netw...iwan/mwan3
Usually the device needs to be designed for this task. Many home routers lack that feature. DDWRT could offer an alternative or another third-party firmware, though compatibility isn’t guaranteed. You might also face the danger of permanently damaging your router by using incorrect flash data.