Comment by usrusr

Thanks. That thought "no PC uses an ESP as its wireless, ESP are used as devices that do their own wireless" was rummaging around in the back of my mind, but failed to really make itself heard.

I'm one of those who think NRF when they hear Bluetooth chip and with Nordics it's actually not that uncommon: when you want to make a PC talk ANT+ (r.i.p.) the dongle you put inside a USB port is usually the same Nrf52 you'd also find in a standalone device, only with some of its GPIO connected to the USB pads.