iMac 21.5 2011 mid ssd installing and jumper wire

silvereik · Jul 16, 2019

I want to install 500gb ssd to my parents old imac but need confirmation about soldering sata wires to disable 100% fan speed.

What i have found that u need to solder together wire 1 and 4 on SATA power plug (reading from the SATA key side).

There is also guide to jump wire 2 and 7 but its on the board side and i don't want to dissemble so much.

mikehalloran · Jul 16, 2019

Where did you get this info?

Link please?

nambuccaheadsau · Jul 16, 2019

Go to OWC and get a heat sensor kit for it. Keep soldering iron from your hard drives.

https://eshop.macsales.com/item/OWC/DIDIMACHDD11/?customer-reviews&ratings.page=3

mikehalloran · Jul 16, 2019

There are ways to do it. Unfortunately, it eliminates any temp sensor for the drive.

Doesn’t matter how many report success. Those who do it with HDDs are idiots. With SSDs, it’s only foolish. iMacs get hot inside and it’s worse when fan sensors are disabled.

Buy the correct part.

silvereik · Jul 16, 2019

http://lowendmac.com/newsrev/11mnr/0520.html

https://www.haught.org/2015/11/16/imac-2011-hd-thermal-sensor/

I dont see why i need temp monitoring for ssd

silvereik · Jul 17, 2019

Also as mentioned in article connecting pin 2 and 7 on board is apple's own hack when they used ssd. Its foolish to spen 50 dollars for cable what you dont really need. This proper cable is a must yes if u use regular hard drive.

Juicy Box · Jul 17, 2019

silvereik said:
http://lowendmac.com/newsrev/11mnr/0520.html

https://www.haught.org/2015/11/16/imac-2011-hd-thermal-sensor/

I dont see why i need temp monitoring for ssd

I'm not going to say you need or don't need a temp sensor for an SSD, as that is for you to figure out.

But, the iMacs get really hot inside regardless of what type of drive you have installed. Of course a HDD will generate a lot more heat than a SSD, but I still think it is important to have that sensor working properly with the SSD's location being in the center of two high-heat generating components.

I have an SSD in my 27", and the iMac runs much cooler, but it still gets really hot sometimes.

Aiwi · Jul 17, 2019

Yeah as you're all saying there's no need to buy the temperature sensor for the SSD. As rightfully stated, even Apple didn't do this stock.

The Apple spare part number is 922-9877. It was installed on systems configured with an SSD.

It's basically a jumper shorting two pins.

https://www.thebookyard.com/product.php?cPath=34_165_240&products_id=8028

mikehalloran · Jul 17, 2019

vertical smile said:
I have an SSD in my 27", and the iMac runs much cooler, but it still gets really hot sometimes.

Yep. Mine does.

Aiwi said:
Yeah as you're all saying there's no need to buy the temperature sensor for the SSD. As rightfully stated, even Apple didn't do this stock.

On the 2011? No they didn't.

silvereik · Jul 17, 2019

Anyway i keep you updated for science if i blow it or it will work. I install sdd this or next weekend. If i do believe internet, jumping these pins doesnt disable your fans or make it work wrong. Hdd fan will just spin about idle speed and its good enough. Also when i spec imac temps right now, hdd fan doesnt rampping when hdd is 50-52*C and probably its start to fail. Its a bit noisi and super slow/freezing when there is a lot of hdd usage even after clean os install.

I take some screenshots before and after to se what fans/temps do.

If jumping wire from drive side looks sketchy i need to lift board.

I dont think that apple himself installed solid drives but maybe that it was for repair shops for upgrading drives when people start to demand ssds

Mr_Brightside_@ · Jul 17, 2019

silvereik said:
Anyway i keep you updated for science if i blow it or it will work. I install sdd this or next weekend. If i do believe internet, jumping these pins doesnt disable your fans or make it work wrong. Hdd fan will just spin about idle speed and its good enough. Also when i spec imac temps right now, hdd fan doesnt rampping when hdd is 50-52*C and probably its start to fail. Its a bit noisi and super slow/freezing when there is a lot of hdd usage even after clean os install.

I take some screenshots before and after to se what fans/temps do.

If jumping wire from drive side looks sketchy i need to lift board.

I dont think that apple himself installed solid drives but maybe that it was for repair shops for upgrading drives when people start to demand ssds

I've been curious about this too.