To explain, i use an USB key which support 802.11ac but i only can connect on 2.4Ghz or 5Ghz but never the two at the same time to have more bandwidth.
Here when i connect, it only connect by default on 2.4Ghz and if i let only 5Ghz into my AP, it connect on.
So, i wondered if there is an option to activate the possibility to connect on 2.4 and 5Ghz at the same time ?
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Bus 003 Device 004: ID 0bda:b812 Realtek Semiconductor Corp. 802.11ac NIC