Mac cannot see wi-fi hardware

Apparently lots of people are having this issue.
If you imac cannot see the wi-fi hardware.
1.  Shut down imac.
2.  Disconnect all wires connected to the imac including the power cord.
3.  Hold power button down for 10 seconds.
4. Reconnect the all wires you had previously disconnected.
5.  Turn on the imac and now you should have wi-fi.
Something to do with power going to the airport card.  This reorders the setting.
You are welcome and have a blessed rest of  your day.

802.11a is at 5GHz, however, your specific phone model neither supports 802.11a nor 802.11n in 5GHz. Only 802.11n in 2.4GHz, 802.11g in 2.4GHz, and 802.11b in 2.4GHz is supported.

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