USB port not working on Mac

Recently I connected an external hard-disk to my new MacBook and observed that it was not properly detected on one of the USB ports. But I can see that it is powering my HDD.
I tried switching to other port and it worked. I simply ignored it by thinking that my HDD cable might be loose.

Now I bought a new USB drive and to get it detected, I have to insert and detach it multiple times. And as usual, I suspected the new USB drive, as my Mac is brand new. And planned to replace my USB drive.

Now my HDD came back to my mind. And also my earlier laptop, in which few KEYS went unresponsive due to accumulated charges.

By little researching I found that I'm not alone. The solution that worked for me was "Resetting SMC"

Here is the procedure I followed:

Shut down the Mac and connect the power cable
Hold down Shift+Control+Option+Power concurrently for a few seconds.
When the light on the power adapter blinks or changes colors you’ll know SMC reset is complete
Release all keys at the same time
Now boot your Mac as usual.

Now I'm happy that I don't have to replace any of my devices.

Comments

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