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We recommend 120GB Mercury Extreme Pro 6G SSD 2.5-inch 9.5mm SATA 6.0Gb/s Solid-State Drive (Mfr P/N: OWCSSDMX6G120) from Other World Computing for $129.00 as a suitable alternative.

OWC

120GB Mercury Extreme® Pro 6G SSD
2.5" Serial-ATA 9.5mm Solid State Drive

High-Performance Storage for Notebook
and Desktop Computers.
When only the fastest and most reliable Solid State Drive on the market today will suffice for your data storage and backup, look no further than the OWC Mercury Extreme Pro 6G SSD.
  • Get maximum mobile performance and battery life from your notebook.
  • Turn your Mac Pro or PC desktop into an EXTREME performance single drive.
The Mercury Extreme SSD line features:
  • DuraWrite™ extends the endurance of your Solid State Drive (SSD).
  • Intelligent Block Management & Wear Leveling automatically distributes data evenly across the entire SSD.
  • Intelligent Read Disturb Management spreads the active read/write across the flash components eliminating data corruption caused by constant use.
  • Intelligent "Recycling" for advanced free space management gradually re-writes data across the SSD over time to ensure data never gets corrupted.
  • RAISE™ (Redundant Array of Independent Silicon Elements) protects the data on your drive similar to having a RAID setup.
  • Best-in-Class ECC Protection for longest data retention and drive life.
No Risk, No Hassle 30-Day Money Back Guarantee.
For more information on OWC return policies, click here.

This internal 2.5" SATA SSD delivers the highest transfer speed, endurance, and performance available today.

With sustained reads up to 559MB/s and writes up to 527MB/s, 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 Extreme SSD line delivers unbeatable performance. It's designed and built in the U.S. from domestic and imported parts and backed by a five year warranty.
High Performance Internal Storage
Replace your conventional hard drive with a reliable solid state drive. Unlike traditional hard disk drives, OWC solid state drives have no moving parts, resulting in a quiet, cool, highly rugged storage solution that also offers faster system responsiveness.
High Reliability & Protection
OWC SSDs allocate some of the drive capacity for RAISE, to provide real time data redundancy,
ECC Error Correction, and reserve cell space.

Example: A 240GB OWC Mercury Extreme Pro SSD is actually a 256GB drive with 7% of the drive's capacity allocated for data management. This management maintains the drive's high-performance and high reliability levels. Unlike many SSDs on the market today, the Mercury Pro family uses advanced DuraWrite™ wear-leveling and block management technologies to keep Read/Write performance at peak, while others see performance fall.
This OWC Mercury Extreme Pro 6G SSD is performance certified for use with all Macs and PCs equipped with SATA Revisions 3.0, 2.0, and 1.0 interfaces (SATA 6Gb/s, 3Gb/s & 1.5Gb/s) except for the following machines:
  • 2008/2009 MacBook/MacBook Pro 13", 15", and 17" models. (Model IDs: MacBookPro5,1; 5,2; 5,3; 5,4; 5,5 and MacBook5,1)
    While a 6G SSD does function, it will only do so at SATA Revision 1.0 (1.5Gb/s) speeds rather that the SATA Revision 2.0 (3.0Gb/s) speed the machine can deliver. Should owners of these machines desire another SSD option, the Mercury Electra 3G SSD does run at the full SATA Revision 2.0 (3Gb/s) specification.
This OWC 6G SSD Model is compatible with nearly any Mac or PC model with a Serial ATA connection (SATA, SATA 2.0, or SATA 3.0) including:
  • All Mac Pro "silver tower" models
  • All MacBook Pro models NOTE exceptions below
  • All Mac mini 2006-Current NOTE exceptions below
  • iMac 2006-current (All Intel Models) NOTE exceptions below
  • All MacBook models NOTE model exceptions below
  • Xserve 2009
Special note for specific 2009 iMacs, 2008-2010 MacBooks, 2008-2009 MacBook Pros & 2009 Mac mini.
We highly recommend the use of a SATA 2.0 (3Gb/s) SSD such as the OWC Mercury Electra 3G for the following Macs:
iMac models with model ID:
How to find the model ID
  • iMac9,1
  • iMac10,1
  • iMac11,1
MacBook models with model ID:
How to find the model ID
  • MacBook5,1
  • MacBook5,2
  • MacBook6,1
  • MacBook7,1
MacBook Pro models with model ID:
How to find the model ID
  • MacBookPro5,1
  • MacBookPro5,2
  • MacBookPro5,3
  • MacBookPro5,4
  • MacBookPro5,5
Mac mini models with model ID:
How to find the model ID
  • Mac mini3,1
While a 6G SSD does function, it will only do so at SATA Revision 1.0 (1.5Gb/s, 150MB/s) speeds rather that the SATA Revision 2.0 (3.0Gb/s 300MB/s) speed the computer can deliver.
The Mercury Electra 3G SSD is the OWC recommended upgrade option for the Macs listed in the special note above.

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:

Specifications

Controller
SandForce 2281 Series Processor with 7% Over Provisioning
NAND
Tier 1 Major Multi-Level Cell (MLC) High-Performance Sync-NAND Flash
Form Factor
Standard 9.5mm 2.5"
Interface
SATA 6Gb/s, 3Gb/s & 1.5Gb/s supported, SATA 3.0 Compliant
Capacity1
120GB useable capacity
Total Flash Memory Components – 128GB
8GB allocated to real-time data redundancy & error correction
Formatted Capacity2
111GiB
RAID Support
Qualified for single drive and multiple drive production workstation RAID 0/1/10/0+1 and SPAN usage.
SMART Attributes
Standard5
Native Command Queuing
up to 32 commands
Manufacturer Model Number
OWCSSDMX6G120
RoHS Compliant
Yes
Format

Physical

Height (max)
7mm (0.276″)
Width (max)
70.06mm (2.758″)
Length (max)
100.12mm (3.941″)
Weight
77 grams +/- 2 grams
0.170 lbs +/- 2.71 oz

Reliability3

Data Reliability
ECC Recovery: Up to 55 bytes correctable per 512-byte sector
Security
Chip Based Data Encryption: 128-bit AES-compliant
TRIM Support
OS Dependent
Nonrecoverable Read Errors
Less than 1 sector per 1016 bits read
Warranty
5 Year OWC SSD Limited Warranty
(Standard return policy applies.)

Performance

Sustained
Reads 6Gb/s (up to)
559MB/s
Sustained
Writes 6Gb/s (up to)
527MB/s
Sustained
Reads 3Gb/s (up to)
284MB/s
Sustained
Writes 3Gb/s (up to)
266MB/s
Read Incompressible
Data Rate (up to)
479MB/s
Write Incompressible
Data Rate (up to)
282MB/s
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

Power

Active
Read: 3000mW (3.0W) Maximum draw
Write: 4500mW (4.5W) Maximum draw
Idle
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)
-67°F to 302°F
Temperature (°C)
-55°C to 150°C

Acoustics

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.
Manufacturer provided specifications for Other World Computing p/n OWCSSDMX6G120 UPC#: 736211768551

Gallery

Customer Ratings

Write a Review 4.9 / 5 107 out of 113 (95%) reviewers would recommend this product
1 2 3 4 5 6 7
Verified Buyer
Reviewer: Manimal Location: Boynton Beach, FL Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Raised the dead!!! September 1, 2020 I got the 2.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive for my wifes MacBook 2010 along with 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. It took an unusable piece of plastic and transformed it into a blazing rocket. She should be able to get a few more years of use out of it now. Installation was very easy thanks to the handy videos hosted by OWC.

I would recommend this item to a friend! This review is from 2.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: Puchol Location: Valencia, Spain Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great! August 26, 2020 Fanstastic SSD. Shipment to Spain (Europe) was very fast.

I would recommend this item to a friend! This review is from 480GB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: Dane
Rating: 5/5 Fast and reliable August 21, 2020 You get what you pay for. This is the fastest and most reliable SSD/RAID setup that I've ever used.

I would recommend this item to a friend! This review is from 2.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: bNelsonR Location: Rockford, Il Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Fixed the Issue July 28, 2020 I have a iMac late 2015 with 8 GB ram that was running very slow. 15 seconds for "about this mac" to open. The ram can not be upgraded so I replaced the hard drive with a OWC solid state. It now runs much faster & opens apps like it should have been doing. So if you have a slow iMac, installing a OWC SSD might be the answer as it was for me.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: Young4MyAge Location: Chicago Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great SSD! July 25, 2020 I'm a senior citizen, hardly an IT guy, but I can follow instructions well enough. In 2013, I installed a 480GB Mercury Extreme Pro 6G SSD in my refurbished MacBook Pro 2012.. Served me quite well but after seven years I was running out of storage and decided to upgrade to this 1.0TB Mercury Extreme Pro 6G SSD. Installation was a fun, not too challenging science project but pretty easy thanks to the excellent OWC tutorial video. When I migrated from my old SSD, however, Apple forced a card on me to install Catalina. I'd been quite happy with High Sierra but figured, why not, it's the latest iOS, and went with it. Big mistake. Lot of apps wouldn't open and some I depended on became quirky. Worst of all my MacBook was running alarmingly hot doing routine tasks. I was afraid I'd gotten a bum SSD but, on a hunch, downgraded from Catalina to High Sierra. Not easily, I should add. Anyway, now my MacBook Pro runs smoother, quieter and COOLER than ever! Great SSD! Also, a phone call to OWC's tech support was quite helpful.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: FredJ Location: Chicago, IL Age: 55-65 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 This is a great company July 4, 2020 Every thing I have order from you whether it has been used computer or upgrades has been great. The upgrades are easy to install and well thought out. I appreciate.

This review is from 2.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: ChairmanRao Location: New Zealand Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Excellent Performance for 4K/60p Video June 18, 2020 I have been testing this SSD on my Atomos Ninja V setup to record 4K/60p out of my Lumix G9. In 4 days of heavy testing I can report that there is not a single dropped frame. I am very happy with my purchase. Also the SSD came extremely well packed. It has the look and feel of a professional grade product and early testing bears this out.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Reviewer: ScorpioSteve Location: San Diego Age: 45-54 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Don’t hesitate, just get it and thank yourself later April 27, 2020 I upgraded my wife’s MacBook Pro with an SSD with the hopes it would speed up her boot times. There were many times she would be waiting for 5 minutes for it to load up. She was ready to throw it out the window.

After following the guides and installing the new ssd, her MacBook Pro now loads up in seconds. It’s literally night and day. I was blown away with what a difference having a high quality ssd would make. It’s been in her laptop for a little over a year and a half and it’s been solid. No issues whatsoever.

I called with a question during install of a ssd and memory upgrade on my iMac and OWC was quick to help me.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: MACuser5252
Rating: 5/5 Great SSD for Mac Mini 2012 December 8, 2019 Got 240GB Mercury Extreme Pro 6G SSD for $65 on Black Friday 2019. Gave new life to Mac Mini 2012, which is now blazing fast (also added 16 GB OWC RAM).

I would recommend this item to a friend! This review is from 240GB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: otetz Location: Petah Tikva, Israel Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Very good SSD October 23, 2019 I had trouble seeing the SSD with the Disk Utility while it was installed inside. As an external disk it had no problem being detected but as soon as it was stuck inside whatever I tried (cloning, internet recovery) wouldn't help. It wasn't recognized with the Disk Utility for some reason.

A support assistant suggested I needed a new internal SATA cable and I risked to purchase it. Now the SSD is alive and kicking. Works well and supports TRIM (not natively). Can't find the words to thank you enough. With Mecrury Electra SSD and 16 GB of RAM my Macbook feels really strong.

I would recommend this item to a friend! This review is from 480GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Reviewer: JakeAntelis Location: NY Age: 25-34 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 This is a great and speedy reliable drive. September 30, 2019 This is an honest review, love this drive and just ordered another. After 6.7 years this drive started to fail on me and i just ordered another. I work in a heavy usage audio environment and reading and writing a ton of data almost every day of the year. I continue to buy OWC as opposed to other brands as i know had i had any issue in warranty they would have made it painless to replace whereas if it were say another huge company you need to go through hoops. Love their customer service also, great people. Also i was thinking about udpating to a new pcie based ssd instead of using the mac tray sata so this gave me an excuse to get another speed bump.

I would recommend this item to a friend! This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: TheParasite Location: TheParasite Age: 45-54 Experience Level: IT Professional Owned Product: 3-4 months
Rating: 5/5 OWC = Quality! August 6, 2019 Decided to take the plunge and add this to my MBP 2010 model. I have NEVER regretted that decision. Super fast for the time it was made!

I would recommend this item to a friend! This review is from 480GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: Wildcatt Location: Peterborough, Ontario, Canada Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Works Great October 15, 2018 received drive quickly (to Canada) everything was as expected install into my Macbook Pro was straight forward Really enjoying the extra pep the computer has now

I would recommend this item to a friend! This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: Burner Location: Reno Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Fast and Reliable September 30, 2018 Swapped out an old HHD on my 2011 MBP. Start up times and launching programs seemed to take a rather long time. I looked at the reviews of this Mercury Extreme Pro 6G SSD and I did not read a bad review. I am curious as to how long these SSD last in terms of R/W, but so far I am greatly pleased by the speed. My old MBP operates so much faster these days. As simple install and a reasonable price is hard to beat.

I would recommend this item to a friend! This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Response from MacSales.com, Call Center October 4, 2018 Hello! Glad to hear the SSD is working well for you. We use the highest quality NAND in our drives, so this should definitely outlast the computer it is in now, and possibly even the next one!
Verified Buyer
Reviewer: JackSparrow
Rating: 5/5 Exactly what I needed! September 12, 2018 SSD arrived on time and was easy to configured and installed.

I would recommend this item to a friend! This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: ader0101 Location: Southern California Age: Over 65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 New lease on life.... August 28, 2018 This disk extended the life of my computer immensely, it was so fast, I can keep my Macbook Pro for a lot more years. A great upgrade!

I would recommend this item to a friend! This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: TedL54
Rating: 5/5 easy install - Works great July 25, 2018 I would recommend this item to a friend! This review is from 240GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:
Verified Buyer
Reviewer: HansR Location: Sebastopol, CA Age: 55-65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 client is very pleased with this SSD July 4, 2018 This was added to one of my client's slightly older MacBook Pro. She was about ready to replace the whole laptop, because it was getting so slow. I convinced her to try an SSD upgrade, and she loves it! I like the fact that the TRIM function is handled by the drive itself -- there's no need to tweak settings in Mac OSX to enable TRIM, which is sometimes the case with other non-Apple SSDs.

I would recommend this item to a friend! This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: MarkieMark Location: Orange, CA Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Great Value! June 3, 2018 Very fast drive that was fully compatible with my friends Mac Mini that I upgraded.

I would recommend this item to a friend! This review is from 240GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: waynekhin Location: Singapore
Rating: 5/5 Mac Pro 2013 starts pretty fast April 23, 2018 With this drives, the startup time of the Mac Pro (2013) is pretty fast. I am extremely happy with the old machine now.

I would recommend this item to a friend! This review is from 480GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: SpiderSavvy Location: Newburgh, IN Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Night and Day Difference March 29, 2018 My aging MacMini Server was essentially unusable due to how slow it had become. After following the simple video tutorial and replacing the old 500 GB HD with the new SSD HD, it was like I had a brand new computer. No joke. Very happy to breath new life into an older, but still very functional, machine.

I would recommend this item to a friend! This review is from 120GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: WhyOne Location: Hollywood, CA Age: 55-65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 When you need the best... March 26, 2018 These drives are dependable and fast. All you need to know.

I would recommend this item to a friend! This review is from 480GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: JGSouthwest Location: Texas Owned Product: 1-3 months
Rating: 5/5 Excellent March 5, 2018 I was so pleased with the first drive I bought another one. Works well. Perfect for my use in video projects. Easy to install in Thunder Bay with the adapter bracket.

This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: IAVI Location: Indio, CA Age: 25-34 Experience Level: Gamer Owned Product: over 6 months
Rating: 5/5 Great results! December 15, 2017 To say the least, this hard drive is the best update to happen to my macbook pro! I love the speed and the response from my laptop. Thank you!

I would recommend this item to a friend! This review is from 240GB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos:

Verified Buyer
Reviewer: nuyorikan Location: Southern California Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 MBP 9,2 revived November 26, 2017 For the last few months my MacBook Pro 9,2 has been very slow at awaking from sleep and during a reboot, especially since a reboot first involves unlocking the drive. Since the upgrade that is no longer the case. I am so happy I performed this upgrade and would recommend it to anyone still with older generation hard disk.

I would recommend this item to a friend! This review is from 1.0TB Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. Customer Videos: