I bought an Alfa .036NA wireless adapter and it came with a 5dB antenna and they said it was an upgradeable antenna for the adapter I bought but when I put it on connected the adapter, there was no change. It's really just about the signal strength or something. Overall I think this is either a broken or faulty product, or it's a scam and a waste of money as it doesn't do anything better than a 5dB antenna.
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