I am a complete noob re WiFi (alway use hard wired) but recently bought a cheap USB dongle described as 150Mbps 11n. On testing I found I was getting about 22Mbps download with the dongle (1 metre from router) compared to 62Mbps wired. Upload speed was about the same as wired.
A bit of Googling told me this was a simplex/duplex problem. I did a test with a friends laptop and got full speed,...
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