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OWC In-line Digital Thermal Sensor for iMac 2009-2010 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 2009- 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 2009-2010 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 4.7 / 5 59 out of 60 (98%) reviewers would recommend this product
    1 2 3 4 5 6 7
    Verified Buyer
    Reviewer: DrFranco Location: San Diego, CA Age: 55-65 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 Brought my old iMac back to life April 6, 2017 I had a late 2009 iMac that had been sitting around for about a year with a dead drive. Reluctant to replace with another Seagate drive because I haven't had great luck with them, but seemingly didn't have a choice as this iMac was a "swap for same model" type. This kit allowed me to replace the drive with something I have a bit more confidence in. It works great and the installation instructions were spot-on. Whole replacement process took no more than 30 minutes. Thanks for the great kit!

    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: Bropaul77
    Rating: 5/5 The installation was easy peasy. April 4, 2017 This kit was just the perfect product for me. With the provided tools the installation was absolutely no problem. I recommend it. -Paul

    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: macmanmich Experience Level: IT Professional Owned Product: over 6 months
    Rating: 5/5 iMac HD fan/temp control harness March 26, 2017 Yep. Works good.

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

    Verified Buyer
    Reviewer: Jetjock Location: Illinois Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
    Rating: 5/5 All the required items included March 16, 2017 I replaced a failing HD in my wife's 2009 iMac. This tool kit supplied all the required items needed to open and install the new drive. OWC's tutorial made this an easy job. Their HD thermal sensor/harness provided all the functionality of Apple's original HD. Everything works just fine but is lots faster with its bigger HD.

    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: Freddy909 Location: Vienna Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
    Rating: 5/5 Great product March 12, 2017 Saved my old iMac when I had to change the original HD. Fan control is working again. Also easy to install .

    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: BrauKnabe Location: Princeton, NJ Age: 55-65 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Easy iMac upgrade March 11, 2017 The kit was exactly what I needed to replace a deceased HDD in my late 2009 iMac with a new SSD. With the video to guide me and the tools in the kit, I had the job done in an hour. The next one will take half that.

    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: KoolKatKen Location: Saskatoon SK Age: 55-65 Experience Level: Power User Owned Product: over 6 months
    Rating: 4/5 Brought New life to 2009 27" iMac March 7, 2017 I bought hoping i could install 3rd party drive into failed 2009 27" iMac. I installed a 240 GB SSD drive and sensor cable worked like a charm. Must say iMac is very fast with this SSD drive installed.

    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: Dryan
    Rating: 5/5 This Product save my productivity March 6, 2017 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: PdxMac Location: Pacific Northwet Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 High stakes, but not high difficulty February 26, 2017 It's scary to pull the screen off a 5K 27" iMac, but only because if you screw up, it'll be expensive and embarrassing. If you follow the video and work slowly and carefully, you'll be fine.

    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: ibnphotog Age: 55-65 Experience Level: IT Professional Owned Product: less than a month
    Rating: 5/5 Great kit and awesome instructional video February 17, 2017 The kit is great but the true gem is the instructional video. Apple clearly chose cool over convenient when designing the latest slimline iMacs. OWC have come to the rescue. The tools in these kits are perfect for the job and the video is extremely clear.

    That being said I'd like to offer a little advice to anyone planning to undertake a hard disk replacement. For reasons I won't go into I had to do this exercise twice (suffice it to say that I have a 2011 iMac cable and sensor looking for a new home) and figured out a couple of things along the way:

    - The screen separation process is significantly easier to start with the iMac still upright. However prudence will stop you from going very far before laying the iMac on its back lest gravity should get the better of it! - There are 3 antennae located on the right side (as you normally view your iMac) - at roughly 12:30, 2:00 and 3:00 positions. Be careful in these areas when releasing the adhesive as there may be a possibility of damaging them if you are too rough - Have a flashlight on hand for when you first lift the screen - and also a convenient non-metallic prop about 3" in height. I found that resting the screen on the prop and the flashlight on the speaker to your right (now viewing the iMac form the top, face up) gave me the best chance to remove the two screen cables. Since these are black cables running across black plastic mouldings and plugged into a black circuit board a little extra light is much appreciated! (Cool gone too far maybe?) - (This lesson came from the second go around) ... Don't start the adhesive right at the bottom of the screen sides - leave around 1" gap. If you don't the next person to disassemble this iMac will curse you all the way to your grave (or theirs maybe). The adhesive is extremely sticky and your magical plastic pry tool, spudge or whatever will not part it. Only the very brave or very stupid will reach for a knife but that may be what is required. Leaving the 1" gap makes that problem go away. - When it comes time to put the screen back on I strongly recommend propping the iMac up to the point that the screen will lie horizontal - it makes alignment so much easier. Before you start grab your prop and rest it inside the iMac at the top of the screen. I used one of OWCs handy dandy suction cups (since I am the proud owner of 4 - see the comment on the 2011 iMac cable ...). - Be aware that the screen will sag slightly in the center when you hold it by the edges. Therefore you have to be very careful when first placing the screen on to the adhesive to make sure you don't end up with a gap at the bottom. I found it best to hold the screen almost horizontal, let it sag ever so slightly, place the center onto your adhesive strip with the the bottom of the screen hard up against the case and then gently lower the sides onto your other two pieces of adhesive. The prop will prevent you from gluing the screen down before you've connected it back on - that would be BAD! - Use a finger as a guide on one lower screen corner to align the screen laterally (your finger can feel gaps down to less than 1/64th of an inch). Make sure to get the alignment just right before allowing any weight to be taken by the adhesive. This stuff is STICKY! - Finally grab that flashlight again as you will need to to reinsert the two cables to the screen - particularly the inner one.

    Now sit back, grab your favourite cold beverage, and admire your handy work. Good job!

    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: Pikur68 Location: Sparks NV Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
    Rating: 5/5 Solved my problem! February 8, 2017 I was having issues with a mid 2011 iMac 27" I recently purchased and the fact that the HDD fan kept failing the TechTool diagnostic exam. When I found out about the change of the location of the temp sensor to the inside of the hard drive, thereby limiting the choice for a replacement, I decided to try this before going to the lengths of replacing the fan itself. It was quick and easy to install, (with the great video help OWC provides!) and it solved the problem completely. I couldn't be happier, and with this in place, I will be ready for the next upgrade, one OWC's SSD drive kits!! Thanks!!

    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: odoylerules Location: Canada Age: 25-34 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 Need this to upgrade 2009 iMac SSD February 5, 2017 Works great, easy to replace with no prior experience. Make sure to clean out the dust while it's open. I damaged the vertical sync cable while opening but got a replacement on eBay. Thanks

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

    Verified Buyer
    Reviewer: DIRSGT Location: Charlotte, NC Age: 45-54 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 Perfect Tools for swapping out to an SSD January 26, 2017 I ordered this kit to install an SSD into my 21.5 mid-2011 iMac. Though nervous, I found the process of taking out my old spinning 1TB hard drive and replacing it with a 1TB SSD to be easier than I thought. I recommend watching the OWC videos and other videos to get the complete picture before starting (note it is easier to replace your HD with an SSD then the process of adding an SSD and KEEPING your old spinning hard drive in the machine. The thermal sensor in this kit is key to keeping everything working smoothly. Since install, I have been amazed at why I did not do it sooner!

    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: flatlander
    Rating: 5/5 Great product January 19, 2017 Thermal sensor adapter cable works great. Install video is very helpful. Be sure to get the correct cable for your year of imac. With the solid state drive the 7 year old imac boots in 20 seconds.

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

    Verified Buyer
    Reviewer: lowerground Age: 45-54 Experience Level: IT Professional
    Rating: 5/5 Great Product!!! January 19, 2017 Serves its purpose. Awesome product!

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

    Verified Buyer
    Reviewer: Simba Location: MO Age: Over 65 Experience Level: Home User Owned Product: over 6 months
    Rating: 5/5 Have an Imac? January 16, 2017 I have used these tools to get inside my 2008 and 2011 Imac's for upgrades to HD's and SSD's. You NEED these if you intend to get inside an Imac

    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: Gern Location: PA Age: 45-54 Experience Level: Power User Owned Product: less than a month
    Rating: 4/5 The first place to start January 14, 2017 I think this kit is the best way to go when first opening an iMac, especially, if you unknowingly installed an SSD that's defective and your iMac has to be reopened multiple times. The video is excellent and should be reviewed several times before attempting the upgrade in order to feel comfortable with the process. For those venturing into this experience for the first time, there are two tools that I feel should be included in the kit that are missing. A pair of long handled tweezers with angled ends are very valuable in removing, and especially reinstalling, the screws around the magnets. Also, a pair of powder-free rubber gloves should be worn to help avoid touching the screen. Removing the clasp on the second cable described in the video is difficult, so take your time and avoid breaking it as I did and needing to use electrical tape to secure it. One of the two suction cups provided in the kit was weaker than the other, so be careful when transferring the glass cover.

    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: dragion Location: Boston, MA Age: 45-54 Experience Level: Home User Owned Product: less than a month
    Rating: 5/5 OWC HDD Kit...is the answer! January 12, 2017 Thanks to MacSales.com for selling the OWC HDD Installation Tools Kit for the solution to upgrade/replace Apple "Vintage" iMacs. Without the tools and supplied in-line thermal, my late 2009 27" iMac would have been "toast"! By following the detailed video created here on this site, the new replacement HDD was done in less than an hour. Easy and straight forward instructions...a novice like me could do it.

    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:

    Reviewer: GabF Location: Montreal, Canada Age: 35-44 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 Great as usual January 5, 2017 It was time to give my "old" iMac a little boost and this was the perfect solution. With the added installation video the replacement was a breeze, thanks a million MacSales. Everything was perfect once again.

    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: ilpive Location: modena italy
    Rating: 5/5 easy installation to upgrade hdd January 5, 2017 quick system for opening and closing iMacs, not only computer knowledge but also you should know about bricolage

    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: trentfox Location: Peterborough, Ontario Age: Over 65 Experience Level: Power User Owned Product: less than a month
    Rating: 5/5 Clever adaptation January 4, 2017 Product was easy to install, and works as advertised. While one can use software to control the hard drive fan speed (and noise!), it was worth $35 to me to have the fan sensor working as it should after replacing the hard drive in a 27" 2010 iMac with an SSD. Incidentally, this was a stupid design decision by Apple to use a drive-specific sensor cable. Fortunately they only did this for one or two years because my 2009 and 2012 iMac models didn't have this.

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

    Verified Buyer
    Reviewer: 4466
    Rating: 5/5 Recommended December 31, 2016 This product provides a simple way to upgrade or replace the hard drive in a 2009 iMac with a non-Apple unit that compensates for the lack of temperature sensor functionality. You don't need to download any fan control software. With the excellent on-line videos, installation of a new SSD was straight-forward. So far, so good!

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

    Verified Buyer
    Reviewer: TinkerTom Location: MS Age: 55-65 Experience Level: Hobbiest Owned Product: 1-3 months
    Rating: 5/5 Great kit December 22, 2016 This was my first time going into my Mac. The video and this simple set of tools made it a breeze. I'm keeping them handy for my next upgrade.

    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: AussieMacUser
    Rating: 5/5 Perfect for iMac SSD upgrade December 19, 2016 This kit (in conjunction with the NewerTech AdaptaDrive 2.5" to 3.5" Drive Converter Bracket) had all the right tools to upgrade my mid-2010 21.5" iMac to an SSD. Everything worked as expected and made the upgrade straightforward.

    My only quibble would be that one of the suction cups required cleaning before it would properly adhere to the screen - easily fixed though.

    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: Styx Age: 25-34 Experience Level: Gamer Owned Product: 1-3 months
    Rating: 5/5 Not that hard to install December 18, 2016 I got that kit to install a Samsung EVO 850 500GB SSD in my system. I also got the "NewerTech AdaptaDrive 2.5" to 3.5" Drive Converter Bracket" in order to fit a 2.5" SSD. I used this kit and followed the step by step video to change the harddrive, and it works without any issue! (the video is really good). I put the thermal sensor against the SSD (middle of it), even though I don't think this does heat a lot, but at least it keeps the fan of my iMac from going crazy.

    My iMac is now very quiet (not more harddrive noise) and runs really fast!

    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:

    OWC In-line Digital Thermal Sensor for all Apple iMac 2009-2010 Models Mfr P/N: DIDIMACHDD09 MacSales.com SKU: OWCDIDIMACHDD09 OWC DIY Kit for all Apple iMac 2009-2010 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 $49.99MacSales.com 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)