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13-inch, 2020, with Four Thunderbolt 3 ports. The left two Thunderbolt 3 ports are not working..

Purchased mid July, my 13-inch, 2020, with Four Thunderbolt 3 ports.

The left two Thunderbolt 3 ports are not working. Is anyone aware of any common issues, or am I just the lucky one?

MacBook Pro 13″, macOS 11.5

Posted on Sep 7, 2021 4:33 PM

Reply
Question marked as Top-ranking reply

Posted on Sep 7, 2021 4:44 PM

laderaautowork wrote:

Purchased mid July, my 13-inch, 2020, with Four Thunderbolt 3 ports.
The left two Thunderbolt 3 ports are not working. Is anyone aware of any common issues, or am I just the lucky one?


Both rebooting and resetting NVRAM/PRAM redefine port definition.



Intel Macs only

resetting NVRAM/PRAM http://support.apple.com/kb/ht1379

(get at least two-three rounds of the chimes when holding the NRAM Reset)


M1 Macs— equivalent - Shut down, close the lid 30 secs+ , reboot as normal

and Try a SafeBoot  https://support.apple.com/en-us/HT201262Reboot as normal to test



If no resolve you can suspect a hardware issue:


Can you run the user Diagnostic...not as definitive as Apple's own AST2 (Apple Service Toolkit) back bench diagnostic, but may kick out an error code.


Use Apple Diagnostics to test your Mac

https://support.apple.com/en-us/HT202731


Or take it in—


In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/


Outside the USA

https://locate.apple.com/country


Learn how to get your Mac fixed and how much it will cost. https://support.apple.com/mac/repair/service


Get your Mac ready for service - Apple Support https://support.apple.com/en-us/HT209095



1 reply
Question marked as Top-ranking reply

Sep 7, 2021 4:44 PM in response to laderaautowork

laderaautowork wrote:

Purchased mid July, my 13-inch, 2020, with Four Thunderbolt 3 ports.
The left two Thunderbolt 3 ports are not working. Is anyone aware of any common issues, or am I just the lucky one?


Both rebooting and resetting NVRAM/PRAM redefine port definition.



Intel Macs only

resetting NVRAM/PRAM http://support.apple.com/kb/ht1379

(get at least two-three rounds of the chimes when holding the NRAM Reset)


M1 Macs— equivalent - Shut down, close the lid 30 secs+ , reboot as normal

and Try a SafeBoot  https://support.apple.com/en-us/HT201262Reboot as normal to test



If no resolve you can suspect a hardware issue:


Can you run the user Diagnostic...not as definitive as Apple's own AST2 (Apple Service Toolkit) back bench diagnostic, but may kick out an error code.


Use Apple Diagnostics to test your Mac

https://support.apple.com/en-us/HT202731


Or take it in—


In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/


Outside the USA

https://locate.apple.com/country


Learn how to get your Mac fixed and how much it will cost. https://support.apple.com/mac/repair/service


Get your Mac ready for service - Apple Support https://support.apple.com/en-us/HT209095



13-inch, 2020, with Four Thunderbolt 3 ports. The left two Thunderbolt 3 ports are not working..

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