---
product_id: 957231
title: "Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520)"
brand: "transcend"
price: "€ 4.58"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.ie/products/957231-transcend-240gb-jetdrive-520-sataiii-6gb-s-solid-state-drive
store_origin: IE
region: Ireland
---

# Max Read: 495MB/s SATA III 6Gb/s Interface Max Write: 427MB/s Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520)

**Brand:** transcend
**Price:** € 4.58
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate Your Mac Experience!

## Quick Answers

- **What is this?** Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520) by transcend
- **How much does it cost?** € 4.58 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/957231-transcend-240gb-jetdrive-520-sataiii-6gb-s-solid-state-drive)

## Best For

- transcend enthusiasts

## Why This Product

- Trusted transcend brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🔄 Repurpose with Style:** Turn your original SSD into a sleek external drive, maximizing utility and storage.
- • **🔌 Universal Compatibility:** Seamlessly connect with SuperSpeed USB 3.0 and Hi-Speed USB 2.0 for versatile data transfer.
- • **💾 SSD Monitoring Made Easy:** Enjoy peace of mind with the free JetDrive Toolbox for real-time SSD health monitoring.
- • **🚀 Upgrade Your MacBook Air:** Transform your mid-2012 MacBook Air into a high-speed powerhouse with the Transcend JetDrive.
- • **🌡️ Extreme Temperature Resilience:** Engineered to perform flawlessly between 32°F and 158°F, ensuring reliability in any environment.

## Overview

The Transcend 240GB JetDrive 520 is a high-performance SSD upgrade kit designed specifically for mid-2012 MacBook Air models. With impressive read speeds of up to 495MB/s and write speeds of 427MB/s, this SATA III 6Gb/s interface drive enhances your device's performance. The kit includes SSD monitoring software and allows you to repurpose your original SSD into an external drive, all while maintaining compatibility with USB 3.0 and 2.0 connections.

## Description

Introducing Transcend JetDrive SSD Upgrade Kit for the Macbook Air and MacBook Pro with Retina Display. Complete with tools, instructions, and a slick aluminum usb 3.1 Gen 1 Enclosure to house your original SSD, Transcend JetDrive SSD Upgrade Kit allows you to both increase your storage space and boost the performance of your Mac.

Review: Transend 480GB SSD for 2012 Macbook Air - My Review of the Transcend JetDrive 520 480GB SSD in a 2012 11" MBA. My Review also includes a comparison of the JetDrive with the OWC Aura Pro Drive. I ordered the OWC Aura Pro Drive the day before the Transcend Drives were announced. Before I received the drive, I called OWC to see if they would price match, and the answer was no. So, I thought Shame on Me. OWC's pricing was $449. for a bare drive and $475. for one that included tools and an enclosure for the old SSD. (OWC's pricing has since been reduced to $398. and $419. respectively) I opted for the bare drive. I installed the drive, and as others have noticed, the vertical dimension of the circuit board the components are mounted on is a millimeter or 2 larger than the stock SSD. Others have cut the board, I didn't, I applied a little pressure and it snapped into place. OWCs installation video is, IMO, far better than the Transcend video. Once set up, the SSD seemed to work fine, for awhile, but less than a day later, the drive started giving me problems. I tried repairing it with both Disk utility and Tech Tool Pro, both to no avail. Two days later it happened again. I called OWC and asked for an RMA. They agreed but said I would have to pay a restocking fee and pay for return shipment. I challenged that, saying this was not a capricious return, that the unit was defective and I expected OWC to pay for shipping and refund the full amount. They agreed, and sent me a UPS label. When ordering the Transcend JetDrive I was quoted a delivery time of from 2 to 4 weeks. The unit was shipped 3 days after the order was placed and I received it one day later, that's 4 days after order placement! The price of the JetDrive 480 GB SSD from desertcart was $350. + Sales Tax (OWC charges no tax in Arizona). If I could have waited longer, I could have bought it from my memory Supplier, Data Memory Systems and not paid Sales Tax, but Transcend has not yet supplied it's distributers with this product. Upon receipt of the JetDrive, yesterday, the first thing that jumped out at me was the packaging. The OWC SSD came packed in an anti-static bag enclosed in a thin gauge blister packed piece of cardboard with blue printing. It looked the packaging used by Ace Combs. The Transcend packaging on the other hand was impressive. A heavy gauge white slide out box with a full color picture of the SSD. The box was multi layered and contained the drive, the enclosure for the OEM drive, and the tools necessary for installation. Each layer was a plastic bed with depressions sized to fit the associated parts. It also contained an instruction booklet and warranty information. The instructions are, IMHO, inadequate, and only two pages apply, the other 26 pages being written for other languages. The tools worked very well, and installation was a breeze. the form factor of the circuit board is the same as apple's so no undue pressure was needed for installation. My old SSD fit into the supplied enclosure with no issues. I then cloned the JetDrive using Tech Tool Pro from the external Hybrid Drive I had been using as the main drive for my MBA. I foolishly ordered my MBA with only the 64GB SSD. No issues. Everything is working as expected. In terms of speed. I have not measured the speed, but it feels very snappy. I believe the OWC and Transcend drives to be equal here. Transcend even supplies software to enable Apple's Trim support, OWC does not. There is however, third party software that enables Trim, Trim Enabler. I use that anyway for the SSD I use in my Mac Pro. The Transcend drive seems to run color than true OWC drive. When feeling the bottom of my MBA where the SSD is mounted, the area while warm, is not as warm as it was with the OWC unit. In ending, I would urge anyone installing the JetDrive in a MBA to watch the OWC installation video, again, it is superior to the Transcend video, and will make things more understandable to you. The JetDrive is by far the superior product, and as of right now is $69. cheaper than the OWC Aura Pro. When I bought the OWC product, it would have cost $125 more than the corresponding Transcend product. That IMHO is Value. Currently, Apple charges $500. to go from a 128GB SSD to a 512GB SSD in the MBA. So, $350. for a 480GB SSD AND you get to keep your old drive, you can't beat that. The Transcend drive seems to run color than true OWC drive. When feeling the bottom of my MBA where the SSD is mounted, the area while warm, is not as warm as it was with the OWC unit.
Review: Great SSD, Easy Upgrade! - It took me a total of about 20 minutes to upgrade my Mid-2012 13" MacBook Air with a 120GB SSD to this 480GB SSD! I have so much space free now that I could copy the 4 Windows VMware Fusion VMs back to the single drive on the system from the external drive they were previously on, and added 120GB a Boot Camp partition for Windows 8.1 w/ Updates to run in both natively and in VMware Fusion. I wish the MacBook Air was RAM upgradeable so I could run more than one VM at a time (I have 4GB RAM and configure my VMs for 2GB, which leaves 2GB for OS X, and 2GB for VMware guest OS's). The enclosure that came to use the original SSD as a super-fast external USB3 drive is great! I can even boot from it and it doesn't let a perfectly good SSD go to waste! I knock off one star (but really should be 1/2 or less if desertcart allowed it), because the Trancend JetDrive Toolbox isn't an identified developer as of the latest OS X Mavericks update 5/2/2014. This means to use it, I need to go into the System Preferences>Security & Privacy, and allow apps downloaded from anywhere to run. I changed the setting once, to enable TRIM support (TRIM is only enabled on Apple first party SSDs--hacks/utilities like the JetDrive Tooxbox needs to make configuration changes to OS X to enable TRIM for 3rd party SSDs). Once I used the JetDrive Toolbox to enable TRIM, I set the setting back to only allow identified developers and won't be using the Toolbox very often. Also, Dropbox detected the drive change and asked me to log-in again, and Mac Microsoft Office 2011 asked me to re-activate. But otherwise, everything else went smoothly. Hopefully Transcend gets their utility on the list of identified developers soon so this problem can be alleviated. But for now, I no longer have to swap my VM's in and out of my system, and the enclosure has given me the fastest 120GB USB3 drive I've ever had! I highly recommend this product if you're running out of space on your MacBook w/ a SATA SSD. Update 5/12/2014: As Transcend noted, they've updated their software and it now runs without having to reduce your system security. Drive is has been very fast and performs reliably. Its great being able to load up everything I need to without worrying about space! Updated to 5 stars!

## Features

- Compatible with mac book air 11 inch and 13 inch mid 2012
- Max Seq. Read: 495MB/s, Max Seq. Write: 427MB/s. Mac Identifier - MacBook Air 5.1
- Next-generation SATA III 6Gb/s interface. SSD upgrade kit included
- Free download of Jet Drive Toolbox SSD monitoring software
- External enclosure is fully compatible with SuperSpeed USB 3.0 & Hi-Speed USB 2.0
- Operating Temperature 32F-158F. Repurpose original SSD into external SSD
- Dual color LED indicator (Power, data transfer and USB 3.0/2.0 connection)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00JKCHNOU |
| Additional Features | Portable |
| Best Sellers Rank | #4,395 in Internal Solid State Drives |
| Brand | Transcend |
| Built-In Media | Full unit |
| Cache Memory Installed Size | 256 |
| Color | Black |
| Compatible Devices | Laptop |
| Connectivity Technology | SATA, USB |
| Customer Package Type | FFP |
| Customer Reviews | 4.6 out of 5 stars 1,011 Reviews |
| Digital Storage Capacity | 240 GB |
| Enclosure Material | Aluminum, unknown |
| Form Factor | 2.5-inch |
| Global Trade Identification Number | 00760557828280 |
| Hard Disk Description | Solid State Drive |
| Hard Disk Form Factor | 2.5 inches |
| Hard Disk Interface | USB 1.1 |
| Hard-Drive Size | 240 GB |
| Hardware Connectivity | SATA 3.0 Gb/s |
| Hardware Platform | Mac |
| Installation Type | External Hard Drive |
| Item Part Number | TS240GJDM520 |
| Item Weight | 2.08 ounces |
| Manufacturer | Transcend |
| Media Speed | 460 megabytes_per_second |
| Mfr Part Number | TS240GJDM520 |
| Model Name | JetDrive 520 |
| Model Number | TS240GJDM520 |
| Number of Items | 1 |
| Read Speed | 570 megabytes_per_second |
| Special Feature | Portable |
| Specific Uses For Product | Personal |
| UPC | 760557828280 012304674368 |
| Warranty Description | Five-year Limited Warranty |

## Images

![Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520) - Image 1](https://m.media-amazon.com/images/I/411iOpoegLL.jpg)
![Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520) - Image 2](https://m.media-amazon.com/images/I/51AwkDzv9tL.jpg)
![Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520) - Image 3](https://m.media-amazon.com/images/I/51kECN7gDmL.jpg)
![Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520) - Image 4](https://m.media-amazon.com/images/I/51u8UPqzEeL.jpg)
![Transcend 240GB JetDrive 520 SATAIII 6Gb/s Solid State Drive Upgrade Kit for MacBook Air, Mid 2012 (TS240GJDM520) - Image 5](https://m.media-amazon.com/images/I/71sE5xyhaiL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Transend 480GB SSD for 2012 Macbook Air
*by L***R on May 9, 2014*

My Review of the Transcend JetDrive 520 480GB SSD in a 2012 11" MBA. My Review also includes a comparison of the JetDrive with the OWC Aura Pro Drive. I ordered the OWC Aura Pro Drive the day before the Transcend Drives were announced. Before I received the drive, I called OWC to see if they would price match, and the answer was no. So, I thought Shame on Me. OWC's pricing was $449. for a bare drive and $475. for one that included tools and an enclosure for the old SSD. (OWC's pricing has since been reduced to $398. and $419. respectively) I opted for the bare drive. I installed the drive, and as others have noticed, the vertical dimension of the circuit board the components are mounted on is a millimeter or 2 larger than the stock SSD. Others have cut the board, I didn't, I applied a little pressure and it snapped into place. OWCs installation video is, IMO, far better than the Transcend video. Once set up, the SSD seemed to work fine, for awhile, but less than a day later, the drive started giving me problems. I tried repairing it with both Disk utility and Tech Tool Pro, both to no avail. Two days later it happened again. I called OWC and asked for an RMA. They agreed but said I would have to pay a restocking fee and pay for return shipment. I challenged that, saying this was not a capricious return, that the unit was defective and I expected OWC to pay for shipping and refund the full amount. They agreed, and sent me a UPS label. When ordering the Transcend JetDrive I was quoted a delivery time of from 2 to 4 weeks. The unit was shipped 3 days after the order was placed and I received it one day later, that's 4 days after order placement! The price of the JetDrive 480 GB SSD from Amazon was $350. + Sales Tax (OWC charges no tax in Arizona). If I could have waited longer, I could have bought it from my memory Supplier, Data Memory Systems and not paid Sales Tax, but Transcend has not yet supplied it's distributers with this product. Upon receipt of the JetDrive, yesterday, the first thing that jumped out at me was the packaging. The OWC SSD came packed in an anti-static bag enclosed in a thin gauge blister packed piece of cardboard with blue printing. It looked the packaging used by Ace Combs. The Transcend packaging on the other hand was impressive. A heavy gauge white slide out box with a full color picture of the SSD. The box was multi layered and contained the drive, the enclosure for the OEM drive, and the tools necessary for installation. Each layer was a plastic bed with depressions sized to fit the associated parts. It also contained an instruction booklet and warranty information. The instructions are, IMHO, inadequate, and only two pages apply, the other 26 pages being written for other languages. The tools worked very well, and installation was a breeze. the form factor of the circuit board is the same as apple's so no undue pressure was needed for installation. My old SSD fit into the supplied enclosure with no issues. I then cloned the JetDrive using Tech Tool Pro from the external Hybrid Drive I had been using as the main drive for my MBA. I foolishly ordered my MBA with only the 64GB SSD. No issues. Everything is working as expected. In terms of speed. I have not measured the speed, but it feels very snappy. I believe the OWC and Transcend drives to be equal here. Transcend even supplies software to enable Apple's Trim support, OWC does not. There is however, third party software that enables Trim, Trim Enabler. I use that anyway for the SSD I use in my Mac Pro. The Transcend drive seems to run color than true OWC drive. When feeling the bottom of my MBA where the SSD is mounted, the area while warm, is not as warm as it was with the OWC unit. In ending, I would urge anyone installing the JetDrive in a MBA to watch the OWC installation video, again, it is superior to the Transcend video, and will make things more understandable to you. The JetDrive is by far the superior product, and as of right now is $69. cheaper than the OWC Aura Pro. When I bought the OWC product, it would have cost $125 more than the corresponding Transcend product. That IMHO is Value. Currently, Apple charges $500. to go from a 128GB SSD to a 512GB SSD in the MBA. So, $350. for a 480GB SSD AND you get to keep your old drive, you can't beat that. The Transcend drive seems to run color than true OWC drive. When feeling the bottom of my MBA where the SSD is mounted, the area while warm, is not as warm as it was with the OWC unit.

### ⭐⭐⭐⭐⭐ Great SSD, Easy Upgrade!
*by D***D on May 3, 2014*

It took me a total of about 20 minutes to upgrade my Mid-2012 13" MacBook Air with a 120GB SSD to this 480GB SSD! I have so much space free now that I could copy the 4 Windows VMware Fusion VMs back to the single drive on the system from the external drive they were previously on, and added 120GB a Boot Camp partition for Windows 8.1 w/ Updates to run in both natively and in VMware Fusion. I wish the MacBook Air was RAM upgradeable so I could run more than one VM at a time (I have 4GB RAM and configure my VMs for 2GB, which leaves 2GB for OS X, and 2GB for VMware guest OS's). The enclosure that came to use the original SSD as a super-fast external USB3 drive is great! I can even boot from it and it doesn't let a perfectly good SSD go to waste! I knock off one star (but really should be 1/2 or less if Amazon allowed it), because the Trancend JetDrive Toolbox isn't an identified developer as of the latest OS X Mavericks update 5/2/2014. This means to use it, I need to go into the System Preferences>Security & Privacy, and allow apps downloaded from anywhere to run. I changed the setting once, to enable TRIM support (TRIM is only enabled on Apple first party SSDs--hacks/utilities like the JetDrive Tooxbox needs to make configuration changes to OS X to enable TRIM for 3rd party SSDs). Once I used the JetDrive Toolbox to enable TRIM, I set the setting back to only allow identified developers and won't be using the Toolbox very often. Also, Dropbox detected the drive change and asked me to log-in again, and Mac Microsoft Office 2011 asked me to re-activate. But otherwise, everything else went smoothly. Hopefully Transcend gets their utility on the list of identified developers soon so this problem can be alleviated. But for now, I no longer have to swap my VM's in and out of my system, and the enclosure has given me the fastest 120GB USB3 drive I've ever had! I highly recommend this product if you're running out of space on your MacBook w/ a SATA SSD. Update 5/12/2014: As Transcend noted, they've updated their software and it now runs without having to reduce your system security. Drive is has been very fast and performs reliably. Its great being able to load up everything I need to without worrying about space! Updated to 5 stars!

### ⭐⭐⭐⭐⭐ Great Product works with OS X Yosemite
*by S***J on July 27, 2014*

As possibly with most of the people reading this review I was torn up between the OWC Aura and Transcend JD 520. I was surprised that there were only two options given the popularity of MBAs (Maybe Apple controlled who could and who couldn't?). Anyway, I chose JetDrive 520 because of two simple reasons: 1. Reliability: I didn't want something that may or may not work. I wanted something that could mate perfectly with the MBA, no compromise on size, no adjustments, no variances in product (Incorrect length, imprecise cuttings, etc..) 2. Quality: When you look at the MBA, the #1 thing that catches most eyes is the quality. The workmanship and the fit-finish. If I was going to buy something that goes inside, I wanted to make sure that at least the enclosure that comes with it, should resemble the MBA itself. In addition to these, I couldn't go for the OWC aura because I felt Transcend was a bigger company and the lord forbid, something were to happen the MBA, I could at least get Discover Card to recognise the transaction and get a refund! Thankfully, nothing like that was necessary, the product worked as described, It worked like a charm, so much so that I have now removed the backup from my old 128GB sitting in the pretty faux aluminum (or is it real?) enclosure and put time machine backups of my MBA (Excluding my media of course, which is why I upgraded my SSD anyway). The performance seems good too, although I no longer have the zeal to download programs and benchmark few kb/s differences in read write speed, the system does feel faster. Not just psychologically but in real life like transferring from iTunes for example. The two things that I would like to comment as a parting note are: 1. Do NOT over-stress the P5 or T5 screws. Although the screw drivers provided of surprisingly awesome quality, do not put all your forearm power into tightening the screw! Also, if you are not careful selecting the right screw driver (P5 vs T5), some instances may lead to fine dust from the housing to deposit in the grooves for the screw and cause the screw to stick out in a little 'non flush' fashion. This will irritate you eventually as it'll stick up in the smooth underbody surface. So, if that were to happen to you, remove the screw, find a similar sized screw, probably from the immediate next one (there are few variations of these things, not all screws are the same length, which is expected in something of this form factor), blow some air so that the dust is dislodged from the screw housing and put the screws back in after interchanging them. 2. I upgraded to OS X Yosemite Beta Preview for developers, although I am not a developer, it worked perfectly without any compatibilty surprises from the SSD. Thanks for reading my review, as always, take the leap of faith and enjoy the difference :)

## Frequently Bought Together

- Transcend TS240GJDM520 JetDrive 520 240GB SATA III SSD Upgrade Kit for MacBook Air SSD (Mid 2012)
- Transcend TS480GJDM850 480GB JetDrive 850 PCIe Gen3 x 4 Solid State Drive
- Crucial 16GB kit (8GBx2) CT2KIT102464BF160B 204-pin SODIMM DDR3 PC3-12800 Memory Module

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-10-22*