📦 Shipping Notice – Public Holiday in Northern Ireland
Due to the Battle of the Boyne public holiday, there will be no postal service on Friday 11th and Monday 14th July 2025.

👉 Please note:
All orders placed after 4:00 PM on Thursday 10th July — including all orders placed over the weekend and on Monday 14th — will be shipped on Tuesday 15th July.

You're welcome to place orders anytime during this period — dispatch will resume first thing Tuesday.
Thanks for your patience and understanding!

Flexx International Ltd
  • 0
No result found for your search.
  • Home
  • All Products
  • OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade
Categories
  • 🔍 Find Upgrades for My Mac
  • Mac Upgrades
  • Memory
  • Storage
  • Docks/Hubs
  • Enclosures
  • PCIe Cards
  • Adapters
  • Laptop Batteries
  • Tools & Service Kits
  • Peripherals
  • Dashcams/Bodycams
  • View More
Featured Products
OWC Express 1M2 USB4/Thunderbolt enclosure for NVMe M.2 SSDs - Portable External Storage
OWC Express 1M2 USB4/Thunderbolt 4 enclosure for NVMe M.2 SSDs - Portable External Storage
£120.00
Sonnet Echo Thunderbolt 3 Dock with two slots for  M.2 NVMe SSD
Sonnet Echo Thunderbolt 3 Dock with two slots for M.2 NVMe SSD
£322.49
OWC Envoy Ultra Thunderbolt™ 5 SSD – 6,000 MB/s Portable SSD (2TB/4TB) – Rugged & Fast External Drive
OWC Envoy Ultra Thunderbolt™ 5 SSD – 6,000 MB/s Portable SSD (2TB/4TB) – Rugged & Fast External Drive
£386.00
OWC Express 4M2 USB4 RAID Enclosure – 4-Bay M.2 NVMe SSD, Up to 3200MB/s
OWC Express 4M2 USB4 RAID Enclosure – 4-Bay M.2 NVMe SSD, Up to 3200MB/s
£216.49
OWC ThunderBlade X12 – Thunderbolt 5 NVMe RAID SSD (12TB–96TB)
OWC ThunderBlade X12 – Thunderbolt 5 NVMe RAID SSD (12TB–96TB)
£2,470.99
Sonnet Echo 13 Thunderbolt 5 Dock with SSD Storage (1TB-4TB), 140W Power, Mac/Windows/iPad Pro Compatible
Sonnet Echo 13 Thunderbolt 5 Dock with SSD Storage (1TB-4TB), 140W Power, Mac/Windows/iPad Pro Compatible
£477.49
Sonnet Silent Gen 4 PCIe card with 8 x M.2 NVMe SSD slots up to 64GB storage - add your own SSD
Sonnet Silent Gen 4 PCIe card with 8 x M.2 NVMe SSD slots up to 64GB storage - add your own SSD
£887.00
Transcend Portable SSD USB-C / USB-A model ESD310C
Transcend Portable SSD USB-C / USB-A model ESD310C
£31.49
OWC 128GB (4 x 32GB) PC4-21300 DDR4 2666MHz SODIMMs ram memory upgrade
OWC 128GB (4 x 32GB) PC4-21300 DDR4 2666MHz SODIMMs ram memory upgrade
£267.49
  • electro-track-order-icon
  • Free Delivery
  • electro-thumb
  • 99% Customers
    Feedback
  • electro-return-icon
  • 30 Days
    Return Policy
  • electro-payment
  • Payment
    Secure System
  • electro-brands-icon
  • Only Best
    Brands
% £-34.00
OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade
OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade
OWC

OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade

7 reviews
  • Share
  • Tweet
Product SKU: OWCDIDIMACHDD09
Available:
Only 2 items in stock
2 items in stock
In stock
Pre-order
Out of stock
£34.00
 
 
This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.
Want it delivered by
  • Description
  • Specifications
  • Compatibility
  • Product Videos
  • Reviews

For upgrading the Hard Drive in 27-inch & 21.5-inch iMac (Late 2009 - Mid 2010) models

  • Required for any drive installed into the main drive bay.
  • Eliminate fan noise and maintain correct system fan control when upgrading your 2011 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.

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.

Highlights

  • The only hardware digital thermal sensor on the market allowing a third-party SATA drive to be installed in your iMac
  • Eliminates fan noise and maintains proper system fan control
  • Designed specifically for the iMac
  • Requires no software hacks
  • Ensures compatibility with Apple's built-in diagnostic processes
  • 1-Year OWC Limited Warranty

Note: Before attempting to perform this installation, please watch the OWC Install Videos below to determine your ability to perform this complex upgrade.

OWC assumes no responsibility for damage that may occur during the install. Technical support for this DIY product consists only of the OWC Install Video.

While OWC encourages the DIY philosophy, this is a very difficult upgrade that requires advanced skills. 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 should visit local Apple certified repair shop.

  • Includes:
    • OWC In-line Digital Thermal Sensor Cable
    • 1 Year OWC Brand Standard Limited Warranty
  • This item does not include installation tools.
  • This kit contains consumable and/or one-time-use components and therefore is not covered by any warranty. If you have any concerns about your ability to perform the upgrade, you can return the unopened kit for a refund. This kit includes cable and mounting set only. iMac, tools, suction cups, and microfiber cloth not included. If you need an upgrade kit with tools, you can purchase the OWC Complete DIY Hard Drive Upgrade Kit for 27-inch & 21.5-inch iMac (Late 2009 - Mid 2010) models
  • iMac (27-inch Late 2009):
    • (October, 2009) | Model ID: iMac10,1 - A1311 - EMC - 2308 | 3.06GHz, 3.33GHz
    • (October, 2009) | Model ID: iMac10,1 - A1312 - EMC - 2309 | 3.06GHz, 3.33GHz
    • (October, 2009) | Model ID: iMac11,1 - A1312 - EMC - 2374 | 2.66GHz, 2.8GHz, 3.06GHz, 3.33GHz
  • iMac (21.5-inch Mid 2010):
    • (July, 2010) | Model ID: iMac11,2 - A1311 - EMC - 2389 | 3.06GHz, 3.2GHz, 3.6GHz
  • iMac (27-inch Mid 2010):
    • (July, 2010) | Model ID: iMac11,3 - A1312 - EMC - 2390 | 2.8GHz, 2.93GHz, 3.2GHz, 3.6GHz

Customer Reviews

Based on 7 reviews
Write a review
86%
(6)
14%
(1)
0%
(0)
0%
(0)
0%
(0)
J
Jennifer Cartwright
Amazing all round

The website was clear and informative. Delivery was swift and just fitted the cable which was super simple and works like a treat!
Would easy buy from this firm again.

A
Antony Cassidy
OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade

I installed this following an upgrade to SSD on a mid 2010 21.5 iMac and I didn't want to rely on software to slow the fan down.
The installation video was a great help and the installation took me (a novice) less the 20 minutes, start to finish.
A great solution!

User picture
D
DC
OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade

I don't usually leave reviews but I was so impressed with Flexx and this product that I thought I should in this instance, particularly as it might be helpful for other people who are in the position I was in.

Following an installation of an SSD to give my ailing iMac a boost, the fans went wild. As I had installed a flavour of Linux I couldn't find a software solution (and I was concerned this could impact the longevity of the rest of the hardware anyway), therefore I had to buy this sensor. Flexx was the cheapest I could find and it was sent very quickly (only a couple of days and very safely packed). One thing to note is that while you can get away with just lifting the screen up for installing the SSD, you need to disconnect the ribbon cables to install the sensor properly. OWC have some helpful videos on YouTube to follow. The installation itself was a piece of cake and has been working beautifully.

User picture
s
steven payne
OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade

works fantastic

User picture
E
Erik
OWC In-line Digital Thermal Sensor for iMac Late 2009 - Mid 2010 Hard Drive Upgrade

Perfect product, no more problem with the HDD fan on a iMac 27" A1312 with a new SSDin replacement of the original HDD. The shipment was really fast, so thank you Flexxmemory!

User picture
12
Got questions? Call us
0800 195 4072
Follow Us
Policies
  • Return and refund policy
  • Shipping Policy
  • Cancellation policy
  • Terms of Service
  • Privacy Policy
Company Info
  • Knowledge Base
  • About us
  • Contact Us
  • Blog
Shop
  • Mac Upgrades
  • Memory
  • Storage
  • Docks/Hubs
  • Enclosures
  • PCIe Expansion Cards
  • Adapters
  • Laptop Batteries
  • Tools & Service Kits
  • Peripherals
  • More
© 2025 Flexx International Ltd. All Rights Reserved | Made by Banbridge Website Studio
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa
  • Flexx International Ltd
Product successfully added to your Shopping Cart
Continue shopping View cart