Free Shipping available on most orders $49.00 & up.

Get Details. »
OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade
  • Required for any drive installed into the main drive bay.
  • Eliminate fan noise and maintain correct system fan control when upgrading your late 2009 - mid 2010 iMac.
  • The only iMac HDD upgrade option on the market certified to pass the Apple Hardware Test.
  • Fixes firmware incompatibility issues with third party hard drives.
  • Engineered in-house and backed by OWC's award-winning customer support.
  • OWC Internal SSD DIY Kit
    This item does not include installation tools.
    Improve Performance and Capacity. Upgrade Your iMac with Confidence.
    OWC's in-line solution is the only hardware digital thermal sensor on the market allowing a third-party SATA drive to be installed in your iMac. A convenient, plug-and-play cable, the In-line Digital Thermal Sensor eliminates fan noise and maintains proper system fan control through the iMac's System Management Controller. This innovative device is designed specifically for the iMac, requires no software hacks and ensures compatibility with Apple's built-in diagnostic processes.

    Using an OWC Internal HDD DIY Kit (sold separately), replace your iMac's original hard drive with up to an 8.0TB hard drive or a lighting fast SSD with a NewerTech Adaptadrive, for dramatic upgrades in storage capacity or data speed while maintaining the original system's fan and diagnostic performance.

    Note: Before attempting to perform this installation, please watch the OWC Install Video, corresponding to your machine, in its entirety to determine your ability to perform this complex upgrade.

    If you are not fully confident in your ability to upgrade the drive in your late 2009 - mid 2010 iMac after watching the OWC Install Video, you can have OWC upgrade your iMac where our certified technicians will expertly upgrade your iMac and ship it back to you.

    If you need an upgrade kit with tools, you can purchase the OWC Internal HDD DIY Kit.

    Includes


    NOTE: This kit contains consumable and/or one time use components and therefore is non-refundable if opened. If you have any concerns about your ability to perform the upgrade, you can return the unopened kit for a refund.
    This kit is compatible with... Learn how to find your Mac's model ID
    iMac Intel
    iMac (27-inch Mid 2010)
    (July, 2010)
    Model ID: iMac11,3
    2.8GHz, 2.93GHz, 3.2GHz, 3.6GHz
    iMac Intel
    iMac (21.5-inch Mid 2010)
    (July, 2010)
    Model ID: iMac11,2
    3.06GHz, 3.2GHz, 3.6GHz
    iMac Intel
    iMac (27-inch Late 2009)
    (October, 2009)
    Model ID: iMac10,1; iMac11,1
    2.66GHz, 2.8GHz, 3.06GHz, 3.33GHz
    iMac Intel
    iMac (21.5-inch Late 2009)
    (October, 2009)
    Model ID: iMac10,1
    3.06GHz, 3.33GHz

    Customer Ratings

    Write a Review 4.8 / 5 69 out of 71 (97%) reviewers would recommend this product
    1 2 3 4 5 6 7
    Verified Buyer
    Reviewer: Arlingtonian Location: Arlington, VA Age: 55-65 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 New life for old iMac July 15, 2018 I have a 27" iMac from mid-2010, which is pretty ancient in computer terms. I'd replaced the hard drive a few years ago, but had to do a kludgey jerry-rig with a transistor to get around the fact that the new drive didn't have a temperature monitor. Then I saw this item @ OWC and ordered it, along with a 2 TB "Firecuda" hybrid drive. Install was easy, thanks to the OWC toolkit and videos (make sure you have another computer handy so you can watch the video while yours is taken apart!). Blasted a good amount of dust out with canned air before re-assembly. Didn't boot the first time; re-opened and found and corrected a loose connection then all was well. Took the opportunity to upgrade to OS-X High Sierra, and it's like I have a new computer! OWC FTW!

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple Late 2009-2010 iMac 21.5", 27". Customer Videos:

    Verified Buyer
    Reviewer: Rusty Location: Newark, DE Age: 35-44 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Perfect fit July 9, 2018 Easy install. Remember to take time to line up the screen after the adhessive is on, only got one chance to fit right.

    I would recommend this item to a friend! This review is from OWC HDD Compatibility for all Apple iMac 27" models 2012 and Later - digital sensor for SMC. Customer Videos:

    Verified Buyer
    Reviewer: Boerh1 Location: Lausanne, Switzerland Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Works perfectly! July 8, 2018 I ordered the temperature sensor for an SSD upgrade in my iMac. I finished the upgrade in 45 minutes and was able to observe the proper functionality of the sensor when I was rendering video files in final cut pro. PS: this solution is less expensive than the ones from the the competition and easier to mount.

    I would recommend this item to a friend! This review is from OWC HDD Compatibility for all Apple iMac 27" models 2012 and Later - digital sensor for SMC. Customer Videos:

    Verified Buyer
    Reviewer: Muraliz Location: Kuala Lumpur, Malaysia Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 Great Product July 1, 2018 I must say the product works like a champ! I was initially a little worried of opening up my iMac, but with the right product and step by step video guide i did it all by myself and replace the hard disk drive to SSD without any issues.

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple Late 2009-2010 iMac 21.5", 27". Customer Videos:

    Verified Buyer
    Reviewer: krispy1121 Location: Sault Ste Marie, Ontario Canada Age: 35-44 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 I've got my iMac back! June 26, 2018 I have a 2010 iMac and for YEARS (literally), the fan has been going in high speed for short bursts, long bursts and intermittent bursts. Sometimes, it sounded like it was revving it's engine. I finally brought it in to be serviced and was told that it was the thermal sensor and the hard drive. Since the sensor is now on the Apple Obsolete list, I had to purchase it myself and this is the site I found. Shipping took less than a week, and the part was exactly what I needed. I'd definitely buy from here again. Thanks OWC!

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer
    Reviewer: mclaughlindzn Location: Charleston, SC Age: 45-54 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 This Kit is a Must! June 20, 2018 Just purchased a new iMac 2017 edition and before even turning it on for the first time, used OWC's installation kit to drop in a larger HD and more RAM. This kit and the accompanying video tutorial made it so easy! Couldn't have done it without it. Thank you OWC!

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 27" iMac models 2012 & Later. Customer Videos:

    Verified Buyer
    Reviewer: MacFixer Location: Ontario, Canada Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
    Rating: 5/5 It "just works" June 14, 2018 The 2009 and 2010 iMacs used a hard drive with 'unique' thermal sensing that isn't used on other non-Apple hard drives. This little temp sensor lets you use any ordinary hard drive as a replacement. It installs on the hard drive easily and there have been no compatibility issues with my mid-2010 27" iMac running High Sierra 10.13.5. Mind you, opening the iMac isn't the easiest but with the proper tools and the helpful video on the Other World Computing website it is quite do-able if you are careful. Highly recommended. I just wish Apple hadn't used those weird drives in the first place!

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer
    Reviewer: TMac
    Rating: 5/5 Contained everything I needed June 4, 2018 This kit contained everything I needed to open up my iMac and access the internals to swap out the drive. Note that I combined with a separate kit for the components used in the drive swap I did.

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 2011 iMac 21.5" and 27" Models. Customer Videos:

    Verified Buyer
    Reviewer: Lipi007 Location: Paks Age: 25-34 Experience Level: IT Professional Owned Product: over 6 months
    Rating: 5/5 Everything OK! June 4, 2018 Everything OK!

    I would recommend this item to a friend! This review is from OWC HDD Compatibility for all Apple iMac 27" models 2012 and Later - digital sensor for SMC. Customer Videos:

    Verified Buyer
    Reviewer: W0ggyPaul Location: Portland, OR Age: 55-65 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Fantastic Kit May 17, 2018 I bought this and the SSD Drive Adapter, and the process was a breeze. The online video was excellent, and everything needed was provided in the kit. I was concerned about breaking the glass, so I had put this off for some time, but after using this kit and video instruction, I would not hesitate to do it again, or recommend it to someone else.

    Thank you very much!

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 27" iMac models 2012 & Later. Customer Videos:

    Verified Buyer
    Reviewer: Lerch
    Rating: 4/5 Great experience! May 13, 2018 Great product, support videos and instructions. Thanks for making a complicated process simple!

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 27" iMac models 2012 & Later. Customer Videos:

    Verified Buyer
    Reviewer: Ibulia Location: Michigan Age: Over 65 Experience Level: Home User Owned Product: over 6 months
    Rating: 5/5 Resurrected 2009 iMac 27” May 11, 2018 My old iMac died 2 years ago. I took it 60 miles to the apple store where I was told they couldn’t do anything for me. So I ordered a new hard drive that appeared to be the same as the original. It didn’t work. So I ordered a new one and a temperature kit from OWC. My original disk that came with the computer would not load. It took me about a month, but I finally got the thing to load from a brand new copy of Snow Leopard. Now I’ve updated to El Capitan and trying to decide whether to go to Sierra or High Sierra. It’s like having a brand new $2000 iMac, interacting with our other iDevices in ways we hadn’t even thought of back in 2009. What a nice surprise!!

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer
    Reviewer: iMacSSD Location: Salt Lake City, Utah Age: 25-34 Experience Level: Power User Owned Product: 3-4 months
    Rating: 5/5 Great to order! May 2, 2018 I love how easy OWC makes it to order this part. I always need one and it ships quickly.

    This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 27" iMac models 2012 & Later. Customer Videos:

    Verified Buyer
    Reviewer: Alvin Location: California Age: 55-65 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 Just Right! April 26, 2018 Just right for upgrading an old iMac with an SSD. This kit and the great OWC video are wonderful

    I would recommend this item to a friend! This review is from OWC HDD Compatibility for all Apple 2011 iMac 21.5" and 27" Models with SMC Compatibility.. Customer Videos:

    Verified Buyer
    Reviewer: Dawn Location: Macomb, IL Age: 45-54 Experience Level: Power User Owned Product: over 6 months
    Rating: 5/5 Great Customer Service-Great Products April 24, 2018 Ordered a replacement part for our computer....got it quick and at a great price!

    I would recommend this item to a friend! This review is from OWC HDD Compatibility for all Apple 2011 iMac 21.5" and 27" Models with SMC Compatibility.. Customer Videos:

    Verified Buyer
    Reviewer: PapaEd Location: Palm Coast, FL Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
    Rating: 5/5 Excellent for upgrading your iMac April 19, 2018 Low cost, easy to use kit with simple-to-follow instructions on their video. Only took about 30 minutes to upgrade to an SSD drive.

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple Late 2009-2010 iMac 21.5", 27". Customer Videos:

    Verified Buyer
    Reviewer: ArielZTD
    Rating: 5/5 Fixed loud/high running fan April 18, 2018 I would recommend this item to a friend! This review is from OWC HDD Compatibility for all Apple 2011 iMac 21.5" and 27" Models with SMC Compatibility.. Customer Videos:
    Verified Buyer Top 100 Contributor
    Reviewer: Andy6456 Location: Oswego, NY Age: 45-54 Experience Level: Home User Owned Product: over 6 months
    Rating: 5/5 The kit U need! April 15, 2018 I recently bought a new/used iMac from OWC and needed the Installation Tool Kit to get into and seal it back up after I upgraded the HDD with an SSD that I previously bought over 6 months ago. This kit makes doing the upgrades easy and anyone can really do them. The kits include quality tools to get the job done fast and accurately.

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 27" iMac models 2012 & Later. Customer Videos:

    Verified Buyer
    Reviewer: ORF2018 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 Great Products and Service April 5, 2018 This kit has worked great for me to be able to change out the Hard Drive on my Mid 2011 iMac. Everything of of good quality and did exactly what they needed to do. These tools with the great instructions let me get this change out done in just over 30 minutes.

    This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 2011 iMac 21.5" and 27" Models. Customer Videos:

    Verified Buyer
    Reviewer: Scot Location: Florida Age: Over 65 Experience Level: Power User Owned Product: over 6 months
    Rating: 5/5 Easy in. March 19, 2018 OWC product provided all items necessary to switch from HHD to solid state drive (SSD)

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 2011 iMac 21.5" and 27" Models. Customer Videos:

    Verified Buyer
    Reviewer: Ando Location: Auckland, New Zealand Age: 35-44 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 Works like magic... March 8, 2018 This product literally saved me thousands. My Mid-2010 iMac's HDD finally died after 7.5 years of use but the rest of the system was fine. This cable, paired with a Seagate Firecuda HDD has brought the system back to life and even faster than before. Easy install when following the MacSales instructional video. (About 40 mins all up for me including dust removal from the accessible fans, motherboard etc.) Thanks team - a lifesaver!

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer
    Reviewer: Mrmaconly Location: Sacramento, CA Age: Over 65 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Great accessory February 25, 2018 Have used many of these devices. Stopped using the software fixes. Now when upgrading my customer's iMac drive, I always order one of these.

    I would recommend this item to a friend! This review is from OWC HDD Compatibility for all Apple 2011 iMac 21.5" and 27" Models with SMC Compatibility.. Customer Videos:

    Verified Buyer
    Reviewer: Vicensj Location: PR Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 Excellent! February 11, 2018 I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple Late 2009-2010 iMac 21.5", 27". Customer Videos:
    Verified Buyer
    Reviewer: macmlover Age: Over 65 Experience Level: Home User Owned Product: 3-4 months
    Rating: 5/5 LCD Display Cable February 4, 2018 It worked like it should. It made my upgrade to SSD work perfectly.

    I would recommend this item to a friend! Customer Videos:

    Verified Buyer
    Reviewer: iShenom Location: Salt Lake City, UT Age: 35-44 Experience Level: IT Professional Owned Product: 1-3 months
    Rating: 5/5 This kit worked like a charm! January 9, 2018 I was replacing a hard drive in a 2013 iMac for the first time. This kit made the process pretty straight forward. It has everything you need to dismantle, connect a new drive, and assemble the iMac again.

    I would recommend this item to a friend! This review is from OWC HDD Installation tools & SMC Compatibility Solution for all Apple 27" iMac models 2012 & Later. Customer Videos:

    OWC In-line Digital Thermal Sensor for all Apple iMac Late 2009 - Mid 2010 Models Mfr P/N: DIDIMACHDD09 OWC SKU: OWCDIDIMACHDD09 OWC DIY Kit for all Apple iMac late 2009 - mid 2010 Models for replacing the main hard drive. Includes all cables necessary for installation. Hard drive and tools sold separately. 1 Year OWC Limited Warranty Ships: Same Day Only $49.99OWC Price $39.99
    Add to CartOther World Computing DIDIMACHDD09 In Stock, Click to Buy Now
    Available iMac Kits: 2009-2010 (21.5" & 27") 2011 (21.5" & 27") 2012+ (27" Only)