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  • If your drive stops working, the Rescue data recovery plan will attempt to recover the data from the failed drive and recovered data will be returned on a media storage device or via secure cloud-based data storage.
  • Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
  • Free shipping for in–lab data recovery; 24/7 online case status tracking
  • If your data isn’t recovered, you get your money back.
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3 Year Data Recovery Plan

from After Solutions
(7547)
  • Your Rescue Plan documents will be delivered to you via email only to the address associated with your Amazon.com account and can be found in your account message center within the Buyer/Seller Messages
  • If your drive stops working, the Rescue data recovery plan will attempt to recover the data from the failed drive and recovered data will be returned on a media storage device or via secure cloud-based data storage.
  • Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
  • Free shipping for in–lab data recovery; 24/7 online case status tracking
  • If your data isn’t recovered, you get your money back.
Learn more

2 Year Data Recovery Plan

from After Solutions
(1036)
  • Your Rescue Plan documents will be delivered to you via email only to the address associated with your Amazon.com account and can be found in your account message center within the Buyer/Seller Messages.
  • If your device stops working, the Rescue data recovery plan will recover the data from the failed device and return it to you on a new piece of external storage media.
  • Covers new removeable flash memory device of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction).
  • Free shipping for in–lab data recovery; 24/7 online case status tracking
  • If your data isn’t recovered, you get your money back.
Learn more

SanDisk Ultra Fit 128GB USB 3.0 Flash Drive - SDCZ43-128G-GAM46

4.5 out of 5 stars 14,031 ratings
Price: $49.95
128GB

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Memory Storage Capacity 128 GB
Brand SanDisk
Hardware Interface USB 3.0
Read Speed 150 Megabytes Per Second

About this item

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  • An ultra‐small, low‐profile, high‐speed USB 3.0 flash drive that's ideal for notebooks
  • The fast way to move media between your devices
  • Read speeds up to 150MB/s
  • Write up to 15X faster than standard USB 2.0 drives
  • Transfer a full‐length movie faster than standard USB 2.0 drives
  • Keep private files private with included SanDisk SecureAccess software

There is a newer model of this item:

SanDisk 128GB Ultra Fit USB 3.1 Flash Drive - SDCZ430-128G-G46
SanDisk 128GB Ultra Fit USB 3.1 Flash Drive - SDCZ430-128G-G46
$16.70
(62,429)
In Stock.

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  • SanDisk Ultra Fit 128GB USB 3.0 Flash Drive - SDCZ43-128G-GAM46
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SanDisk Ultra Fit USB 3.0 Flash Drive, 16GB SanDisk Ultra Fit USB 3.0 Flash Drive, 32GB SanDisk Ultra Fit USB 3.0 Flash Drive, 64GB SanDisk Ultra Fit USB 3.0 Flash Drive, 128GB
Capacity 16GB 32GB 64GB 128GB
Transfer speed (up to) 130MB/s 150MB/s 150MB/s 150MB/s
USB 3.0 enabled (USB 2.0 compatible) ✓ ✓ ✓ ✓
SanDisk SecureAccess software ✓ ✓ ✓ ✓
RescuePRO Deluxe recovery software ✓ ✓ ✓ ✓
Operating temperature 32°F to 113°F (0°C to 45°C) 32°F to 113°F (0°C to 45°C) 32°F to 113°F (0°C to 45°C) 32°F to 113°F (0°C to 45°C)
Storage temperature 14°F to 158°F (-10°C to 70°C) 14°F to 158°F (-10°C to 70°C) 14°F to 158°F (-10°C to 70°C) 14°F to 158°F (-10°C to 70°C)
Drive dimensions 0.75 x 0.63 x 0.34 in. (19.1 x 16.1 x 8.6 mm) -- without cap 0.75 x 0.63 x 0.34 in. (19.1 x 16.1 x 8.6 mm) -- without cap 0.75 x 0.63 x 0.34 in. (19.1 x 16.1 x 8.6 mm) -- without cap 0.75 x 0.63 x 0.34 in. (19.1 x 16.1 x 8.6 mm) -- without cap
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Product description

Size:128GB

This ultra‐small, low‐profile USB 3.0 drive stays put for extra storage or moves media super‐fast between devices. Now you can transfer a full‐length movie in less than 30 seconds, enjoy write speeds up to 15 times faster than standard USB 2.0 drives and count on ever‐present storage that is designed to stay put.

Product information

Size:128GB

Technical Details

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Additional Information

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
For warranty information about this product, please click here [PDF ]

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
14,031 global ratings
5 star
75%
4 star
12%
3 star
4%
2 star
3%
1 star
6%
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Top reviews from the United States

SilverCore Labs
2.0 out of 5 stars Insanely HOT after just a minute or so of use! Be VERY CAREFUL!
Reviewed in the United States on December 21, 2016
Size: 128GBVerified Purchase
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154 people found this helpful
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Pagliano Servero
1.0 out of 5 stars Extremely hot. Dangerous product.
Reviewed in the United States on May 3, 2016
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1.0 out of 5 stars Extremely hot. Dangerous product.
By Pagliano Servero on May 3, 2016
I copied ~15GB of big files to SanDisk 32GB model from a ThinkPad X1 Carbon. I noticed that the speed quickly dropped down to less than 10 MB/s, so I was disappointed because my USB 3.0 drives are consistently fast.

But as if the slow speed was not bad enough, I literally burned my fingers when I unplugged it. I did not receive a bad burn, but I can still feel the burn on the tips of my index finger 10 minutes later.

I am an adult male. I am not extra sensitive to hot temperatures. This device is a danger to both humans and to USB ports.

In their comments, SanDisk is lying about the max 95 F temp. I copied a 4GB file to the device, and measured the temp at 120 F - see attached pic. I assume it would go higher if I copied more data.
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865 people found this helpful
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Slick Nick
1.0 out of 5 stars It does not transfer data as fast as it is supposed too and burns you.
Reviewed in the United States on August 18, 2016
Size: 128GBVerified Purchase
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1.0 out of 5 stars It does not transfer data as fast as it is supposed too and burns you.
By Slick Nick on August 18, 2016
It does not transfer data as fast as it is supposed too and burns you. I was excited to use it for the first time, plugged it into the USB 3.0 and attempted to move 45gigs of data with a 40 MIN eta, yay! After five minutes the 30 min eta went to 6hrs and 45mins! the drive was slowing down... but why? I touched it and it burned me, so I busted out my thermal imaging camera to check and it was in excess of 130 degrees Fahrenheit, after it cooled down and started transferring slower. This is obviously a dangerous product as applied heat of 131 degrees Fahrenheit causes second-degree burns on exposed skin, how can they sell stuff like this?
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778 people found this helpful
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Kalev
5.0 out of 5 stars In response to the heat issue . . . and a couple other notes.
Reviewed in the United States on December 30, 2017
Size: 128GBVerified Purchase
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Top reviews from other countries

Suporex TV
5.0 out of 5 stars Great solution for car music
Reviewed in the United Kingdom on April 11, 2018
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5.0 out of 5 stars Great solution for car music
Reviewed in the United Kingdom on April 11, 2018
First of all I bought this to use in my car for music so I was not worried about other people comments saying it gets hot. But I did some tests and indeed it gets hot when writing files on it but nothing crazy I could still hold it in between my fingers no problem. Not getting hot when reading from it (played music for 1h and check after). It looks good in car as it is small so not sticking out of dashboard.

Came formatted in FAT32 so I reformatted to NTFS, but tested speeds first they are same and now I can put big files on it if needed.
Tested as well coping files up to 300MB and large files like 4GB and again speeds were similar. I have attached screenshot.
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Reviewer12350
4.0 out of 5 stars Great drive, great value, a bit warm...
Reviewed in Canada on May 2, 2017
Size: 128GBVerified Purchase
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4.0 out of 5 stars Great drive, great value, a bit warm...
Reviewed in Canada on May 2, 2017
At the time of purchase, this was the cheapest 128 GB flash drive I could find, but this is certainly no compromise - when you buy this, you're not cheaping out, you're getting a great product that just also happens to be the competitively priced. I'd challenge anyone to find a smaller drive! The capacity shows in Windows as 115 GB, which is a down a little from the expected 119, but it's certainly no fake drive. The speed is also good (CrystalDiskMark benchmark results attached). It does get quite hot though. Never dangerous like it will burn you or anything but warmer than most things you'll touch in a day (well, unless you drink coffee/tea I guess). This doesn't really bother me other than that it makes me wonder if this will seriously shorten the lifespan of the device.
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Sortean
2.0 out of 5 stars Gets way too hot.
Reviewed in the United Kingdom on January 9, 2018
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F, S.
1.0 out of 5 stars Ok for small files. Large performance hit from overheating moving big files
Reviewed in the United Kingdom on July 13, 2019
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1.0 out of 5 stars Ok for small files. Large performance hit from overheating moving big files
Reviewed in the United Kingdom on July 13, 2019
Purchased 18 August 2018 for £12.89

I purchased this USB flash drive as I needed a small one for my key ring.

As my computer only has up to USB 3.0 anyway, I didn't see the need to purchase any newer standards.

These tests are 11 months after purchasing. So not representative of a newer product, but more so of the product after you've had it for a while at least. Though it shouldn't make that much of a difference, there would be a problem if the product becomes much worse within the space of a year.

It claims "Read speeds of up to 150MB/s" and Write speeds "Write up to 15X faster than standard USB 2.0 drives (4MB/s)" 15*4 = 60MB/s, lets put that to the test with CrystalDiskMark & ATTO.

read & write speed % performance vs advertised

Results of CrystalDiskMark also in image.

Sequential Read (Q= 32,T= 1) : 144.832 MB/s = 144.832/150 = 96.55% performance.
Sequential Write (Q= 32,T= 1) : 48.080 MB/s = 48.080/60 = 80.13% performance.

Random Read 4KiB (Q= 8,T= 8) : 8.303 MB/s [ 2027.1 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 0.786 MB/s [ 191.9 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 8.220 MB/s [ 2006.8 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.748 MB/s [ 182.6 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 6.343 MB/s [ 1548.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.743 MB/s [ 181.4 IOPS]

Test : 1024 MiB [G: 12.9% (7.5/58.4 GiB)] (x3) [Interval=5 sec] = x3 1GB tests

* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

The CrystalDiskMark write results were lower than actual speeds when I got when transferring a 1.2GB file.

Next I used ATTO Disk Benchmark. Results also in Images.
ATTO Test 1 Parameters: I/O size 512B - 64MB, File size 1GB, Queue depth 3.

Highest Write: 24.36 MB/s 24.36/60 = 40.60% performance.
Highest Read: 166.60 MB/s 166.60/150 = 111.07% performance.
Average Write (256KB-64MB): 22.41 MB/s (anomalous result) 22.41/60 = 37.35% performance.
Average Read (256KB-64MB): 161.45 MB/s 161.45/150 = 107.63% performance.

I moved the USB to a different port, as I thought it was rather close to a lot of heat, so temperature may have effected the ATTO write speed.

Halfway through testing with the different parameters and in a different port, I realised/remembered that it is perhaps ATTO itself that is creating the heat, as it is somewhat of a stress test. I.e. the USB got rather hot. And I believe started to thermally throttle.

ATTO Test 2 Parameters: I/O size 256KB - 64MB, file size 256MB, Queue depth 5.
Highest Write: 66.75 MB/s = 111.25% performance.
Highest Read: 161.01 MB/s = 107.34% performance.
Average Write Excluding overheating (256KB-64MB): 64.38 MB/s 64.38/60 = 107.30% performance.
Average Write Including overheating (256KB-64MB): 47.08 MB/s 47.08/60 = 78.47% performance.
Average Read (256KB-64MB): 158.45 MB/s 158.45/150 = 105.63% performance.

Transferring a 1.2GB video file to the USB had an average write speed of between 62 MB/s to 64 MB/s. I transferred the file a few more times, just to test whether it would slow down. And it heated up enough that the speed went to the similar 25 MB/s write speeds as during the ATTO tests, and went lower than 20 MB/s if I transferred the 1.2GB file 3 times in a row and spiked lower than 10 MB/s if I pushed it even harder.

So it wasn't just ATTO stressing it more than normal use. If you transfer 1GB+ worth of files, the flash drive starts to overheat (this is the case in my laptop anyway, the laptop may exacerbate this more than if it was plugged into a PC case, as the USB is closer to the laptop's own components that are fairly hot themselves).

TL:DR/Conclusion: It's fine if you're only going to be transferring small file sizes and unplugging almost as quickly as you plugged it in. It performs better than advertised when it is cool. However, as soon as it starts to heat up and you're transferring 3GB+ worth of files it's write performance plummets by as much as -90%.

Edit: I noticed another review stating that they thought perhaps the speeds going down to 20 MB/s was because the 1GB+ files were exceeding the flash drive's cache/buffer. So I have added another ATTO test that bypasses the Write Cache. And the results below, and in the additional images, shows the same results as my previous tests, which either means it's not cache related and is indeed thermal or it's something else I haven't thought of.

ATTO Test 3 Parameters: I/O size 256KB - 64MB, file size 256MB, Queue depth 5.
Highest Write: 65.51 MB/s = 109.18% performance.
Highest Read: 169.16 MB/s = 112.77% performance.
Average Write: (including overheating): 46.76 MB/s = 77.94% performance.
Average Write (excluding overheating): 60.8 MB/s = 101.33% performance.
Average Read: 166.20 MB/s = 110.80% performance.
Lowest Write: 25.88 MB/s = 43.13% performance.
Lowest Read: 163.17 MB/s = 108.78% performance.
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Agnes Kane
5.0 out of 5 stars Excellent stick. Heat generated is not an issue.
Reviewed in the United Kingdom on June 27, 2018
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