Try Turris Omnia, the open source router | Opensource.com
Openwrt Linux Wifi | Demo Board Ubuntu | Linux Rockchip | Rockchip Board | Rockchip Rk - R5c - Aliexpress
DIY Linux Router Part 3: PPPOE and Routing
LPS8V2 New version Indoor open-source Debian system LoRaWAN Gateway
Setting Up Linux Router Using Debian | Planet Isa Raffee
BrosTrend Linux WiFi Adapter for Ubuntu, Mint, Debian, Kali, Lubuntu, Xubuntu, Zorin, Raspbian, Zorin, Raspberry Pi 2+, Windows, 1200Mbps, 5GHz / 2.4GHz, Long Range 2 X 5dBi External Antennas, USB 3.0 | Lazada.co.th
LinkStar H68K is a pocket-sized router (or mini PC) with Android, OpenWRT, Ubuntu, and Debian support - Liliputing
BrosTrend AX1800 USB WiFi 6 Linux Compatible WiFi Adapter for PC – BrosTrend Direct
Amazon.com: BrosTrend Universal WiFi to Ethernet Adapter, 300Mbps on 2.4GHz, WiFi to Wired Converter Wireless Bridge + BrosTrend Linux USB WiFi Adapter 1200Mbps Supports Ubuntu, Mint, Kali, Debian, Kubuntu, Mate : Electronics