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SanDisk Ultra Fit 128GB USB 3.0 Flash Drive (SDCZ43-128G-GAM46) [Newest Version]

by SanDisk
4.2 out of 5 stars 3,516 customer reviews
| 192 answered questions

List Price: $39.99
Price: $28.95 Free Shipping for Prime Members | Fast, FREE Shipping with Amazon Prime
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128GB
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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
29 new from $28.95 3 used from $24.61

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Size: 128GB

From the Manufacturer

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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This item SanDisk Ultra Fit 128GB USB 3.0 Flash Drive (SDCZ43-128G-GAM46) [Newest Version]
Customer Rating 4 out of 5 stars (3516) 4 out of 5 stars (1126) 4 out of 5 stars (261) 4 out of 5 stars (1932)
Price $28.95 $34.95 $28.94 $40.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Amazon.com
Color Black Black Metallic
Hardware Connectivity USB 3.0 USB 3.0, USB 3.0 USB 3.0, USB 3.0 USB 3.0, USB 3.0
Item Dimensions 0.6 x 0.34 x 0.75 in 0.61 x 0.77 x 0.34 in 0.45 x 4 x 5.5 in 0.48 x 1.57 x 0.43 in
Memory Storage Capacity 128 GB 128 GB 128 GB 128 GB
Add to Cart Add to Cart Add to Cart Add to Cart

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 Questions & Answers

Customer Reviews

Top Customer Reviews

The manufacturer commented on the review below
Size: 32GB Verified Purchase
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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The manufacturer commented on this review(What's this?)
May 5, 2016
Hi Peter Dalesh,

My name is Allen from SanDisk Support. I am sorry to learn about your experience and appreciate your feedback. SanDisk drives comply with industry specific standards and are tested to remain in acceptable temperature ranges under normal operating conditions in host and USB flash drive devices.

Since you are facing issues with the drive in terms of its operating temperature it might be affecting the transfer speeds of the drive. In order to analyze and resolve this for you, I would request you not to use the flash drive anymore and please contact SanDisk support at 1-866-SANDISK or submit a support request at www.sandisk.com/support. We will assist you towards an appropriate solution including a possible replacement.

Thank you,
Allen,
SanDisk Support
The manufacturer commented on the review below
Size: 16GB Verified Purchase
The speed of this product is fast, but be aware that it generates a lot of heat and hot to touch after a few minutes of use.

Because the thumbdrive gets unusually hot, I measured current with USB current meter. I connected usb current meter to USB 2.0 port, and connected SanDisk Ultra Fit 16GB on the other side.

When the thumbdrive is in idle, 0.06A is constantly measured.

When the thumbdrive is in active, measure current fluctuates between 0.16A and 0.10A, so the average current looks to be 0.13A.

The power consumption rate of the thumbdrive is P = VI = 5.04V x 0.13mA = 655 mW. Because the power mostly dissipates as heat, the power consumption rate can be regarded as heat generation rate. If you are an electrical engineer, you can find that 655 mW is quite a high power for the small devices as thumbdrive. Note that the power limit of a normal resistor used in breadboard is 1/4 Watt. The power consumption of the thumbdrive is twice to the allowed power consumption of a normal resistor.

Furthermore, my computer is equipped only with USB 2.0 and the above current measurement is implemented in USB 2.0. In USB 3.0, much more current will flow through the thumbdrive, generating even more heat and increases temperature further.

High temperature in thumbdrive means shorter lifetime. Thus, I recommend this product for occasional use, but not for continuous or extensive use.
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The manufacturer commented on this review(What's this?)
May 28, 2015
Hi Wonkyu Kim,

My name is Allen from SanDisk support. We appreciate your interest in SanDisk products and your review. SanDisk drives comply with industry specific standards and are tested to remain in acceptable temperature ranges under normal operating conditions in host and USB flash drive devices.

SanDisk drives are tested to comply to the safety standards in "Safety of Information Technology Equipment, IEC 60950-1", where the ambient temperature range is between 0°C and 35°C. SanDisk Ultra Fit can run a little warmer than other similar drives due to its high performance and compact form factor, which can limit the immediate dissipation of heat from the circuitry.

As you may be aware, the latest laptops and desktops also generate considerable amount of heat which can contribute to SanDisk Ultra Fit running warm while inserted in these hosts. Nevertheless the drive is tested to remain in acceptable temperature ranges under normal operating conditions so to not affect your host device. Please wait for 15-20 seconds after operation to remove/eject the drive before interacting with it.

However in case the drive is heating up exceptionally, please contact us at 1-866-SanDisk (726-3475) or submit a support request at www.sandisk.com/ask. We will assist you towards the best possible resolution.

Thank you,
SanDisk Support.
Size: 16GB Verified Purchase
Reviews say that this little bugger runs hot - yes it does. Some state it is slow - yes it is - after it gets hot. Other reviews say it will not work on a car stereo - no issues with that at all but I replicated the issue.

Precursor - I use SanDisk USB keys exclusively for work and car audio. I also use their SDHC Ultra cards exclusively for my digital photography. They are (IMHO) the best on the market. That being said - my review of this item.

First - when it is in-use - I mean really in use - like a large or numerous files - it gets HOT - Way hotter than the 35 degrees celsius (95 degrees F) that the SanDisk people refer to in the reviews...hot enough that you cannot touch it for a few seconds (again where the SanDisk people say to let it sit for 15-20 seconds before touching - Why???). After a large file transfer, it cools quickly. When using it in an auto receiver - it does not heat up as the data is randomly being accessed in short bursts. That being said - it does get hot. The older USB-2 versions (Cruzer Fit CZ33) does not get hot. Guess the data moves so fast that it scorches the copper pathways.

That brings me to the second point. USB-3 quickness. It is USB-3 quick on the transfer start but it slows down relative to the heating of the USB key. The hotter the USB key, the slower the transfer. When transferring 12gb data, it got very hot - stopped transferring for a minute (the USB key cooled down) started up quickly and then slowed down again to a crawl and finally - stopping again for the key to cool. I was able to do this on a laptop, desktop and MacBook - same results with all three so it is not a computer issue. So - is it USB-3 quick? Yes - until it overheats and stops to cool.

Third - Car stereo. Works like a champ!
Read more ›
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The manufacturer commented on the review below
Size: 128GB Verified Purchase
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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The manufacturer commented on this review(What's this?)
August 29, 2016
Hi Slick Nick,

My name is Allen from SanDisk® Support. I appreciate your feedback and review for our product. The speed of the flash drive depends upon different factors like the USB interface through which the flash drive is connected, the size of files being transferred and the operating system. We may have to
perform a speed test on the flash drive to check if the drive is performing within the expected specifications.

Also, SanDisk drives comply with industry specific standards and are tested to remain in acceptable temperature ranges under normal operating
conditions in host and USB flash drive devices.

SanDisk drives are tested to comply to the safety standards in "Safety of Information Technology Equipment, IEC 60950-1", where the ambient temperature range is between 0°C and 35°C. SanDisk Ultra Fit can run a little warmer than other similar drives due to its high performance and compact form factor, which can limit the immediate dissipation of heat from the circuitry.

Since the Flash drive gets too hot to touch or you are facing any other issue with this flash drive please contact SanDisk support at 1-866-SANDISK or submit a support request at www.sandisk.com/support., I would request you not to use the flash drive anymore if it's overheating and SanDisk stands behind the warranty on its products. We will assist you towards an appropriate solution.

Thank you,
Allen,
SanDisk Support
Size: 16GB Verified Purchase
Oh boy, they weren't kidding about these things getting hot! I totally burned myself. If I transfer anything over 1 GB in one go, it overheats and fails. I'm surprised, I really considered SanDisk a good brand util now.
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The manufacturer commented on the review below
Size: 16GB Verified Purchase
Cons:
23MB/S write - not really what you expect from a USB3.
There is "too small" ... I keep loosing it
The bump seems redundant, but it is still a nice design
Very difficult to attach to keys (was it not the point? )
Pros:
Fast read
Small ...
It is a SANDISK - so I expect it to be reliable
Overall write speed is okay for most

Update :
I am surprised about the attention this got - I was not going for accuracy - sandisk works. I'll depend on them anytime, I assume it's as good as it gets.

Update :
I forgot to mention - I ordered about ten of these and five crucial ones for work. People liked this design more, I liked crucial since it for better on a keychain. Speed was the same.
Both groups performed reliably, no data lost even after a few ended up in the laundry.
Both (sandisk and crucial) heat alot.
So no news basically.
I ended up for big jobs just using an SSD to move data (or crossover...).
I am changing to 4 stars for reliability and popularity with my users.
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The manufacturer commented on this review(What's this?)
April 29, 2015
Hi Avi Z,

My name is Rocky from SanDisk support. I appreciate your interest in SanDisk products and your review. The SanDisk Ultra Fit 3.0 has performance speeds up to 10 times faster write speed than a USB 2.0 drive, which is the optimum performance delivered in the most favourable conditions. We would also suggest you to run a test using a benchmarking software such as CrystalDiskMark to obtain the actual performances of the drive.

For further assistance, please contact SanDisk support at 1-866-SanDisk (726-3475) or submit a support request at www.sandisk.com/support .

Thank you,
SanDisk Support.

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