Think it works for there own products but more and more they are a market place and other companies just use them to sell through and distribution network.
I used a 300 baud acoustic coupler in college. I used it as little as possible.
We have a 9 ping RS232 to mod-plug (CAT5 looking) rollover cable to connect to our switches at work. A console cable.
I’ve had really good luck with our ISP. My wife works there. We have a 1Gbps fiber connection and she texted me that they now have multigigabit available. Either 2 or 5. I told her I’d have to upgrade routers, switches, and computers if I wanted to take advantage of that.
We’re good with 1 for a bit. Our kids have moved out too.
I suppose I could bump it to 2Gbps and serve as a backup site for work. 
But we use the same ISP at work.
Here on the US Amazon site it looks like the PC is available.
https://www.amazon.com/s?k=10.1%20Inch%20Touchscreen%20Mini%20PC%20With%20Battery