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I replaced hard drive with SSD in 2019 without having the Thermal Sensor Adapter. I have it now and want to know if the installation process changes for me installing it into my imac 27 2010. Do I need to reset any of the SMC or prams? Any other input welcomed.
The 2014 models onward don’t need the in-line sensor when running High Sierra or newer which is why your newer 2019 didn’t need it, but your older 2010 will. But! You might hit a SATA speed issue as the older iMac is only SATA II (3.0 Gb/s) so the drive needs support this slower I/O. Most drives today are fixed SATA III (6.0 Gb/s) which is to fast. Some drives are auto sense, and will match to the systems SATA ports I/O speed. Review the drives spec sheet to see what it is able run at.
