Hey, thanks for the replies.
I am plugging the Ethernet adapter into the USB port (the micro USB port nearer the HDMI port) - not the power port (my case has a little USB symbol and PWR symbol to label the two ports correctly).
I have done a bit more exploring and it looks like my problems might be bigger than I originally thought. I had been trying to work with the Zero headless, but I have tried plugging it into my monitor via the HDMI port and I’m not getting any output on the screen. In fact the monitor’s power light just blinks as if it is not plugged into anything!
I have tried three different power supplies, which all work fine with other Pi models that I have, and neither the Ethernet adapter or the monitor will power up.
So I reinstalled Rasbian Buster onto the micro SD card and copied
ssh and (properly configured)
wpa_supplicant.conf files onto the boot partition and it DOES connects to the wireless no problem and I can ssh into it! I’m a bit stumped by this. It seems that the Pi is booting up okay but that it is not playing ball with hardware peripherals.
Is it possible that my handling of the board has shorted something or created an anomalous hardware problem somehow?
Or is there something in Rasbian that I need to configure to switch on access to the Ethernet adapter (I’m grasping at straws here)?
Thanks for your help. Any further suggestion are gratefully received :)
PS. I actually bought three of the Ethernet adapters and all three work flawlessly with my Android devices so I don’t think the problem is with the adapters!