The standard HDD for iMac Late 2009 and Mid 2010 has a terminal for temp sensor, and the HDD fan is controled by its temp.
This is not standard for other general HDDs. So if you need to replace a HDD, the HDD fan will run at high speed, and it's noisy. And Apple Hareware Test reports error.
This Temp. sensor cable will resolve this issue. The temp sesor will be put on the HDD spindle.
Compatibility: iMac 21.5/27 inch Late 2009 and Mid 2010, all models.
1. Temp sensor cable
2. Anti-heat tape : 2
3. NewerTech 11 pc tool kit
4. 2 suction cups for the outer glass removal
5. Installation Manual
Installation is not easy. Expert skills are required. If you can disassemble an iMac completely, you can do it.
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