I notice the thread started with an Advent computer. I had one, the backlight failed after 2-years, but Advent previously swore blind that it did not have a microphone - it did.
The Advent also had an inscription inside saying wireless lan; if it did I never found it.
I looked at a replacement from Currys. They swore it had not got a VGA Out; it did. They said it was the Kensington lock.
The moral is that your computer only has what you can find and what you can make work
