Installation Went Off Without a Hitch

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I was having intermittent connection issues on SATA 1+2 ports.

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The repair went off without a hitch. I replaced both the superdrive cable and the HDD cable.

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If you are having random hangs and kernel panics on heavy I/O with this MacBook Pro model (mid 2012), this is the fix if the HDD or SSD are known good.