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Transcend > 
Item#: 9SIA4M51PC2055

Transcend SSD340 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD) TS128GSSD340

  • 2.5"
  • 128GB

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Imagine your notebook was faster, lighter, more reliable, and longer lasting. To overcome the limits of portable computing, Transcend’s SSD340 SATA III SSD boasts incredibly fast transfer speeds, a compact and lightweight design, shock and vibration resistance, and DevSleep support. That means you can enjoy a seamless, lag-free computing experience even when using your notebook on an extended journey.


  • Next Generation SATA III 6Gb/s Interface
  • DDR3 DRAM cache
  • TRIM Command support
  • Ultra-slim 7mm form factor
  • SATA 6Gbps/3Gbps/1.5Gbps connection options
  • Intelligent Block Management and Wear Leveling
  • Built-in ECC protection for long data retention
  • Supports Native Command Queuing
  • Intelligent "Recycling" for advance free space management (Garbage Collection)
  • Supports S.M.A.R.T.
  • Shock and vibration resistant



Performance Upgrade

Transcend's SSD340 is built using high-quality synchronous multi-level cell (MLC) NAND flash memory for enduring performance and features the next-generation SATA III 6Gb/s interface, DDR3 DRAM cache, and a powerful controller. As a result, the SSD340 makes everyday computing tasks, such as booting up your computer, launching applications, and transferring data, quicker than ever before.

In order to allow straightforward installation in notebook computers, mainstream PCs, and today’s advanced Ultrabooks, the SSD340 features the industry-standard 2.5" form factor. Yet, it measures just 7mm in height and only weighs a mere 52g. Moreover, the SSD340 offers cool, silent operation and excellent resistance to shock and vibration, further proving that it’s the ultimate upgrade to your standard rotating hard drive.


Low Power, Fast Response

The SSD340 maximizes notebook battery life when not in use thanks to full support of SATA Device Sleep Mode (DevSleep). DevSleep ultra low power state conserves more battery power than current power saving features such as standby mode by shutting down the SATA interface completely. And with a remarkable response time of less than 20 milliseconds, you can start working on your computer again almost instantly.


Built-In Reliability

To keep your Transcend SSD running fast, clean, and error-free, the advanced SSD Scope software application is available to download and work with the SSD340. SSD Scope allows you to monitor SSD340 health status with S.M.A.R.T. technology and enable the TRIM command in the operating system to help maintain optimum write speeds, all from a single user-friendly tool

For operating systems that do not support the TRIM command, the SSD340 offers an aggressive garbage collection and recycling system. To further increase the lifespan of the SSD340, built-in wear-leveling and Error Correction Code (ECC) ensure continued reliable data transfer. SSD Scope also includes a convenient System Clone utility to help make upgrading your existing computer to the performance boost of an SSD340 quick and easy.


Capacity 64GB, 128GB, 256GB
Size 99.8mm × 69.8mm × 7mm
Weight 52g
Storage Media Synchronous MLC NAND Flash memory
Operating Voltage DC 5V
Operating Temperature 0°C (32°F) to 70°C (158°F)
Certificates CE, FCC, BSMI

What's in the Box


  1. SSD340
  2. Bracket
  3. Screws x 8
  4. Quick Installation Guide
  5. Warranty Card

Learn more about the Transcend TS128GSSD340

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the Transcend TS128GSSD340

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  • Eric F.
  • 10/2/2015 12:42:23 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsThis drive failed me

Pros: It was very fast and worked well for a few months. Through August and most of September I had no problems.

Cons: Then I started getting error messages about Windows being corrupted. Next thing I know the drive is completely wiped. I reinstall Windows on it, woks fine for a day or two, then has registry issues. Wiped it myself this time and reinstalled again. In just a few days it would stick itself in a boot loop, continually trying to start windows and continually failing. I'm just lucky I bought a warranty.

Other Thoughts: Did all sorts of self-help stuff first to identify, then fix the problem. This included testing the RAM and my numerous reinstalls. Possible that this drive just doesn't play nice with WIndows 10 for some reason.

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  • joe a.
  • 3/18/2015 9:43:52 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsFast

Pros: This SSD seems faster than my Intel but maybe it is only my imagination. No problems to date.

Cons: None

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  • omar a.
  • 2/24/2015 4:05:01 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWorks well

Pros: Works well, my computer starts up lightning fast.

Cons: None

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  • Samuel R.
  • 2/23/2015 9:33:11 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSSD For the Win!

Pros: The item will easily boost your system boot up and response time. The included 3.5" bracket is awesome for the price of the unit. My PC boot up time is now around 30 seconds or less, down from 1-2 minutes with a conventional HDD. For the cost of the unit, the included accessories, and the overall boost in performance it's a great buy!

Cons: The 3.5" adapter didn't work well with the hard drive sled system in my PC case. The case (MFG'd by NZXT) included tray pins don't fit in the pre-drilled screw holes on the bracket. This was easily fixed by drilling them a bit larger. It's not a total Con, but should be known if you have a HDD slide system, like my case.

Other Thoughts: If you can afford it, it's worth going to a larger capacity. You'll find a windows PC (64 bit, Win 7) will only allow for 119 GB to 120 GB of usable space due to formatting. SSD pricing per gigabyte is getting closer to reasonable. I'm never going back to conventional HDD for OS installations.

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  • Jorge T.
  • 1/19/2015 10:13:26 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat SSD

Pros: Works great after almost 9 months of daily usage.

Windows 10 boots in about 3sec. Everything is almost instant. I can write to USB drives @ 50MB/sec even with batches of smaller files.

Runs cool even under load. Sips power, the power usage of my machine went down by 5W under load when I moved to this SSD.
Idle wattage down by 2W.

Cons: None

Other Thoughts: It has Cache memory (RAM) which not all SSD's have. its extremely fast especially on commonly used files (or if you keep opening the same thing again and again).

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  • S. T.
  • 1/7/2015 7:55:04 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGREAT SSD

Pros: Wrote the 1st review of this product back in Feb 2014, and almost a year later, it performs beautifully.

Cons: I have been having issues with the Scope software that Transcend provides on its website. So far, have been able to update the firware only once as a result, but the SSD runs perfectly none-the-less.

Other Thoughts: Having own and run over 10 different SSDs in my home environment, I always come back to this stable and reliable SSD. It is now the primary SSD in my main laptop again, and I doubt I will switch it out except for testing other SSDs. Top notch product!

1 out of 1 people found this review helpful. Did you? Yes No

  • Nicholas S.
  • 12/6/2014 8:22:24 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGood Value

Pros: -Good Value
-Better than expected performance
-MLC over TLC
-7mm height for thin, newer laptops
-Came nicely packaged, quality feel
-Uses well-reviewed controller

Cons: -None thus far.

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  • Melinda F.
  • 11/29/2014 12:41:37 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsInstantaneous Gaming

Pros: Caveat: This is my first ssd and I do not track benchmarks.
With that said I can tell you I am starkly aware of the difference between mechanical disc and ssd. I used to have to wait for new maps to load in BL2, Just Cause 2, Skyrim etc but now load screens very rarely appear. The OS behaves like a psychic freak with applications and tasks happening instantaneously. Also sleep and wake happen in a fraction of a second.

Cons: Man for the price and space I couldn't possibly list a con.

Other Thoughts: Right now I have the dreaded Win8.1 video and graphic software and about 5 awesome games on it with room to spare. I still have a 1tb mech for the db stuff though. Oh and I'm not using a video card.

Enermax Ostrog ATX Computer Case
MSI Z97-Gaming 3
Intel Core i5-4570 Haswell
Transcend SSD340 TS128
Western Digital 1 TB SATA III 7200

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  • Mercedita R.
  • 11/27/2014 2:59:04 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSuch Speed O_O

Pros: Exceptional data transfer rates. Great price.

Cons: none come to mind as of yet. If anything happens t, I'll revise this review, but so far so good :D

Other Thoughts: Windows 7 x64 loads literally 12 seconds after I press my power button... 'nuff said...

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  • John N.
  • 11/24/2014 5:27:47 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsShould hav known better

Pros: Computer boots up

Cons: VERY poor performance. Computer hangs, stalls, freezes and everything else.

Other Thoughts: I researched this brand as I'm not familiar with the name. The reviews seemed promising so went with it. Should have stuck with what I am familiar with. Will never get this brand again.

0 out of 7 people found this review helpful. Did you? Yes No

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