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A few sites I've visited say that you need an in-line digital thermal sensor to prevent iMacs turning on its fan at full blast when replacing the hard drive with a third party SSD.
Is this the case when replacing the optical drive with an SSD rather than the hard drive?
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First, here is the IFIXIT guide for the dual drive setup: Installing iMac Intel 21.5" EMC 2389 Dual Hard Drive. While it implies dual Hard Drives it also will support a SSD instead.
If you jump down to Step12 here is the point you take the optical drive thermal sensor off the optical drive and then carefully place it back onto the drives case. This will preserve the SMC signaling so the fans will not go into safe mode (running at full blast).
If you decide to replace the HD with the SSD. You'll need to buy a replacement thermal sensor as the built-in sensor in the hard drive will now be missing. What I do here is get an extra optical drive sensor cable, Apple P/N: 922-9624 Cable, Temp Sensor, Optical Drive to use instead of the drives sensor. Follow this IFIXIT guide for all of the details: iMac Intel 21.5" EMC 2389 Hard Drive Replacement.
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40 minutes - 2 hours
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1 - 2 hours
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Thanks for your help
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Hi Dan,
Is it possible to use one Apple P/N: 922-9624 Cable for the Optical Drive and other Apple P/N: 922-9624 Cable for the SSD disk?
Gracias!
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"If you decide to replace the HD with the SSD. You'll need to buy a replacement thermal sensor as the built-in sensor in the hard drive will now be missing. What I do here is get an extra optical drive sensor cable, Apple P/N: 922-9624 Cable, Temp Sensor, Optical Drive to use instead of the drives sensor."
Thank you Dan.
And is it the same using Apple P/N: 922-9624 cable or using OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive.
Could I still use iStats to get the temperature from the NEW SSD with both cables?
Gracias
I prefer the OWC in-line sensor, at its easier to apply. The Optical drive sensor doesn't mount as cleanly.
Software doesn't really get into the picture here.
The sensor talks to SMC, SMC is polled by the OS and any 3rd party app polls the OS for the data.
Great!
I´m a bit afraid of breaking sth, hope not (Any advice?). As I´ll touch iMac internally for the first time, is there any chance to update Bluetooth to use airdrop without problems?
Here is my HW, sorry it´s in Spanish.
BLUETOOTH
Compatible con Bluetooth LE: No
Compatible con Handoff: No
Compatible con Instant Hotspot: No
Fabricante: Broadcom
Transporte: USB
Chipset: 2046
Versión del firmware: v208 c518
WIFI
Interfaces:
en1:
Tipo de tarjeta: AirPort Extreme (0x168C, 0x8F)
Versión del firmware: Atheros 9280: 4.0.74.0-P2P
Modos PHY compatibles: 802.11 a/b/g/n
Canales admitidos: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
Wake on Wireless: Compatible
AirDrop: Compatible
Gracias.
Your system appears to be AirDrop: Compatible so I'm not sure what you are asking.
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