Today I'm finally receiving the flex cable I ordered from eBay (iFixit didn't have the cable for a lower occupied HDD (so the cable for the upper available bay), and buying from OWC would be very expensive due to the delivery price). My plan is to add an SSD (Crucial M500, 480GB, already in my hands and tested via an external USB3 box). I'm not sure if it will deliver 6Gb or not, and I would like to use the original flex cable that came with the Mini for testing/speed test (because I reckon the original cable may be faster), and use the new cable for the HDD and obviously place the HDD in the upper bay. So, my question: Is it ok to place the HDD from the lower bay to the upper bay? My concerns are the temperature and noise, and/or sensors that the original cable may have, that swapping cables might make me lose the sensor?