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We recommend DIY Kit: 480GB OWC Mercury Extreme Pro 6G SSD + NewerTech AdaptaDrive + In-line Thermal Sensor. (Mfr P/N: KITIM09HP480) from Other World Computing for $179.51 as a suitable alternative.

DIY Bundle

and HDD Kit for Late 2009 - 2010 iMacs

Mercury Extreme Pro SSD and iMac HDD Kit
Upgrade with Confidence!
The complete solution for your 2009 - 2010 iMac
Experience the extreme performance of an OWC SSD upgrade with this easy DIY SSD and hard drive replacement kit. Add an SSD to your hard drive equipped iMac to experience faster booting, near instant application launches and lightning fast data transfer speeds.
Fast and reliable solid-state storage
With incredible sustained data speeds, up to 100X greater data protection than enterprise class Hard Disk Drives, and RAISE technology for RAID like data protection and reliability, the OWC Mercury 6G SSD line delivers unbeatable performance, that's backed by an incredible OWC SSD Limited Warranty.
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.
Maintains highest performance while offering ultimate convenience
The NewerTech AdaptaDrive has been benchmark test proven to deliver the same data transfer rates as is experienced when a drive is connected directly to the SATA data bus. The AdaptaDrive doesn't create a bottleneck or any performance throttling...it delivers pure data pass-through performance and drive use convenience from any 2.5" SATA 1.5Gb/s, 3Gb/s, or 6Gb/s hard drive or SSD.

Please note, that before attempting to perform this installation, it is recommended you watch the associated instructional video in its entirety to determine your ability to perform this complex procedure. OWC assumes no responsibility for damage that may occur during the install.

Release Candidate (RC) firmware set

There are two kinds of firmware for SSDs Mass Production (MP) and Release Candidate (RC). Prior to an MP firmware release, there are beta firmware releases and an RC firmware release. Often, the RC is the same as the MP release, however there can be small changes and bug fixes made between the two. OWC has evaluated the RC for the 6Gb/s SandForce 2281 Processor and found it to be stable with no issues reported during our testing. However, as with any evolutionary product, issues may surface as different usages and configurations are employed and it is important to understand that there will be further updates and revisions.

Since no firmware update is currently offered for the OWC Mercury EXTREME Pro 6G SSD, no update page exists. To see the typical steps involved with a self performed field firmware update, please visit our 3Gb/s product update page at: http://eshop.macsales.com/Customized_Pages/Framework.cfm?page=sf_firmware.html

It is important to note that the current firmware update tool requires the use of Windows XP/Vista/7. OWC is currently working on a Mac OS based update tool, but we do not have an exact availability date.

120GB Mercury Extreme Pro 6G SSD Specifications:


SandForce 2281 Series Processor with 7% Over Provisioning
Tier 1 Major Multi-Level Cell (MLC) High-Performance Sync-NAND Flash
Form Factor
Standard 7mm 2.5"
SATA 6Gb/s, 3Gb/s & 1.5Gb/s supported, SATA 3.0 Compliant
120GB useable capacity
Total Flash Memory Components – 128GB
8GB allocated to real-time data redundancy & error correction
Formatted Capacity2
RAID Support
Qualified for single drive and multiple drive production workstation RAID 0/1/10/0+1 and SPAN usage.
SMART Attributes
Native Command Queuing
up to 32 commands
Manufacturer Model Number
RoHS Compliant


Height (max)
7mm (0.276″)
OWC 7mm – 9.5mm Adapter
1 included (buy additional)
Width (max)
70.06mm (2.758″)
Length (max)
100.12mm (3.941″)
77 grams +/- 2 grams
0.170 lbs +/- 2.71 oz


Data Reliability
ECC Recovery: Up to 55 bytes correctable per 512-byte sector
Chip Based Data Encryption: 128-bit AES-compliant
TRIM Support
OS Dependent
Nonrecoverable Read Errors
Less than 1 sector per 1016 bits read


Reads 6Gb/s (up to)
Writes 6Gb/s (up to)
Reads 3Gb/s (up to)
Writes 3Gb/s (up to)
Read Incompressible
Data Rate (up to)
Write Incompressible
Data Rate (up to)
Random 4K Read4
Up to 60,000 IOPS
Random 4K Write4
Up to 60,000 IOPS
Read Latency
less than 0.1ms
Write Latency
less than 0.1ms


Read: 3000mW (3.0W) Maximum draw
Write: 4500mW (4.5W) Maximum draw
Less than 1000mW (1.0W)

Environmental (Operating)

Temperature (°F)
32°F to 158°F
Temperature (°C)
0°C to 70°C

Environmental (Non-Operating)

Temperature (°F)
-40°F to 185°F
Temperature (°C)
-40°C to 85°C


Idle (Typical)
0.0 bels
Seek (Typical)
0.0 bels
  1. 1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences. 
  2. In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
  3. Specific application environments such as temperature and duty cycle will affect the overall reliability.
  4. Specifications provided by SandForce.
  5. Temperature reporting is currently an unsupported feature because due to the operating characteristics of SSDs, it is highly unlikely one would ever exceed an OWC Mercury SSD's stated operating temperature ceiling of 158F/70C. However, we are looking into supporting this feature in the future via a firmware update. Firmware updates can be found here: http://eshop.macsales.com/tech_center/OWC/SSD.

AdaptaDrive Specifications:

NewerTech Part Number


Drive Inteface

  • Fully SATA Revision 3.0 (6Gb/s) compatible
  • SATA Revision 2.0 (3Gb/s) and 1.0 (1.5Gb/s) compatible

Drive Supported

  • (1) 2.5" SATA 6Gb/s drive


  • Black painted Aluminum


  • Height: 0.4 in (1.0 cm)
  • Width: 4.0 in (10.2 cm)
  • Length: 5.8 in (14.7 cm)

Weight (Without Drives

  • 3.5 oz (99.2 g)
Manufacturer provided specifications for Other World Computing p/n KITIM09HP120 UPC#: 812437026085


27" iMac (2010) Install Video

21.5" iMac (2010) Install Video

27" iMac (2009) Install Video

21.5" iMac (2009) Install Video

This product 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
3.2GHz i3, 2.8GHz i5, 3.6GHz i5, 2.93GHz i7
iMac Intel
iMac (21.5-inch Mid 2010)
(July 2010)
Model ID: iMac11,2
3.06GHz i3, 3.2GHz i3, 3.6GHz i5
iMac Intel
iMac (27-inch Late 2009)
(October 2009)
Model ID: iMac11,1
2.66GHz i5, 2.8GHz i7
SSD Compatiblity Note
iMac Intel
iMac (27-inch Late 2009)
(October 2009)
Model ID: iMac10,1
3.06GHz, 3.33GHz
SSD Compatiblity Note
iMac Intel
iMac (21.5-inch Late 2009)
(October 2009)
Model ID: iMac10,1
3.06GHz, 3.33GHz
SSD Compatiblity Note


Included Items
  • (1) OWC Mercury Extreme Pro 6G SSD
  • (1) AdaptaDrive 2.5" to 3.5" Drive Converter Bracket
    • (4) 2.5" drive to bracket mounting screws
    • (4) Bracket to 3.5" drive bay mounting screws
    • AdaptaDrive Assembly Manual & User Guide
  • (1) In-line Digital Thermal Sensor Cable
  • (2) NewerTech 2.25" Suction Cup
  • (1) Torx T10s driver
  • (1) Torx T8s driver
  • (1) NewerTech pry tool
  • (1) Microfiber scratch-free cloth

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.


The best warranty is one you never have to use - but should the need occur - we're proud to provide a superior level of support and service coverage to our customers.

5 Year OWC SSD Limited Warranty on the OWC Mercury Extreme Pro 6G SSD

1 Year OWC Brand Standard Limited Warranty on the OWC In-line Thermal Sensor cable

5 Year NewerTech Product Limited Warranty on the NewerTech AdaptaDrive

Even when not used, we understand the peace of mind afforded by a longer warranty period. OWC's industry leading coverage is a testament to our confidence in the reliability of the solutions that we offer. OWC solutions are engineered to demanding quality standards in order to deliver the most reliable, highest performance available on the market in each storage category.

Customer Ratings

Write a Review 4.5 / 5 2 out of 2 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: LongtimeCustomer Location: Asheville, NC Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 4/5 Good kit but needed professional installation July 11, 2018 I have successfully installed upgrades, hard drives, memory, and optical drives in several Apple computers including an Apple IIc, a Power Mac 5400, and an iMac G5. I felt comfortable attempting the SSD upgrade on my 21.5" Mid 2010 iMac using the well done OWC install video as a guide, however I was unsuccessful. I was not able to successfully reinstall the display port cable and ended up retiring the computer and replacing it with a used 21.5" Mid 2011 iMac from OWC. Nothing wrong with the kit or the install video from OWC but my skill level was not up to the challenge. Suggest professional installation for a 21.5" Mid 2010 iMac or similar computer unless you have experience removing and replacing the display on a computer with a similar display port connector.

I would recommend this item to a friend! This review is from DIY Kit: 1.0TB OWC Mercury Extreme Pro 6G SSD + NewerTech AdaptaDrive + In-line Thermal Sensor.. Customer Videos:

Verified Buyer
Reviewer: AverageGuy Experience Level: Home User
Rating: 5/5 Mercury 1.0TB SSD- fast, easy install August 22, 2017 This SSD replaced a corrupted HDD (remember to back up folks!). Selecting the correct install video was confusing after two similar videos showed in the play list. Once I found the correct video the install was quick and easy. I used the upgrade kit with suction cups, Torx drivers and pry tool. Not having completed this install before I didn't want to chance damaging components so I tried the upgrade kit. Looking back I'm sure I could have removed the glass without the suction cups and used a pry tool from my cycling kit bag. The install video was the best help. The video quality was high and the sound was clear enough to follow without wondering what the instructions were. The most challenging step was removing cables in the system. The clips had never been touched and were too small for a firm grip. The video zoomed in to show well enough how to remove the clips. The SSD installed easily and I didn't take nearly as long as the recommended time. Once powered I noticed a significant increase in speed- computer boot, read / write operations, internet searches, everything. I'm very pleased with the drive.

I would recommend this item to a friend! This review is from DIY Kit: 1.0TB OWC Mercury Extreme Pro 6G SSD + NewerTech AdaptaDrive + In-line Thermal Sensor.. Customer Videos:

DIY Bundle 120GB OWC 6G SSD and HDD Kit for Late 2009 - 2010 iMacs Mfr P/N: KITIM09HP120 OWC SKU: OWCKITIM09HP120 Complete DIY kit for upgrading your 2009 - 2010 iMac's hard drive 5 Year OWC Limited Warranty
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