USB Adapter A6100 not showing some 5ghz wifi

[aldian]

I have buying this product for connect to some public wifi with dual band.

After installed the driver, the 2,4g wifi is showing as well, but not to 5,8ghz.

I've been checked the wifi use channel 157 on my another laptop that using 5ghz wifi chipset. (Realtek 8821AE)
It recognize the wifi as well.

But not to A6100, so why to solve this?

[michaelkenward]

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@aldian wrote:

I have buying this product for connect to some public wifi with dual band.

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You have looked at the same public wifi source and shown that some devices see 5GHz wifi but the A6100 does not?

[aldian]

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michaelkenward wrote: 
You have looked at the same public wifi source and shown that some devices see 5GHz wifi but the A6100 does not?

Yes, the public wifi have dual band, but A6100 only recognize 2,4g not 5ghz.