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thunderbolt port

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    iMac doesn't recognize thunderbolt port

    My 27 inch iMac late 2012 model doesn't recognize its thunderbolt ports any more after I upgraded OS X to 10.10.5, currently 10.13.6. The System report states "Thunderbolt: No hardware was found." The thunderbolt ports were last recognized by 10.10.3. I did SMC and PRAM. Self diagnose test...
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    Thunderbolt 1 failure

    Hello My Thunderbolt 1 port connection has ceased working on my Mac Mini (late2012) - presumably the Thunderbolt connection stopped working since updating from Sierra OS to High Sierra OS. In the meantime, I have reverted back to El Capitan OS - but still, there is no Thunderbolt connection. I...