MediaTek can only broadcast 2.4Ghz

[hantao-zhou]

Describe the bug

I use a MediaTek based usb wifi stick(NIC) and it can only broadcast 2.4 Ghz, the problem is similar to the one here problem link

So is there a USB NIC that can support the broadcast in 5Ghz band?

To Reproduce
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Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. Ubuntu]
• Version [e.g. 18.04]

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