As others has pointed out, I’m using the GL.inet 750s (slate), I’m in a hotel right now using it! I got mine several years ago and I’m not sure how easy they can be found now. Like you pointed out, I wanted to run stock openWRT on it, it wasn’t available when I first bought it, but now it is a supported device. It’s nice, I keep two backups, one for wired ethernet (when the hotel has it) and the other is for wifi where I connect the 2.4 radio in client mode to the hotel internet and the 5ghz radio in master mode as an AP and bridge the ethernet ports. It works well, but it does have a micro USB for power.