SanDisk SDCZ430-064G-I35 Ultra Fit 3.1 64GB USB Flash Drive (Black)

So tiny. Perfect for Car usb , fit and Small like invisible and space saver. Love it. Hope it's work long and not currept or write protected in future.

It's a small USB pendrive but very convenient to use. It takes less space and also the speed of uploading is good.

Awesome product. It's compact and feels so cute. I am using it till now (in 2025). Because of its size, it gains temperature a little higher. Overall I will recommend.

The speed is good but it throttles and the speed drops pretty frequently maybe due to the small size, But I use it to live boot linux for recovery purposes and it has served me well for so many years. I have plugged this in my laptop and its hardly noticeable just bc its so small...would recommend 100%

good product... didnt face any technical issues like read/write... transfer speeds are what you expect a good pen drive's speeds to be... dont compare with SSD speeds... good value for money storage solution

I have purchased 3 of these SanDisk ultra fit flash drives the recent one being yesterday. It is of 128gb capacity. After rigorous read/write/erase/format...repeat for the last 10-12 hrs let me sumnarise my observations for Informed Purchase decision by other fellow customers. Pros: 1. Tiny size... that's it. Ultra small. Zero footprint. Cons: 1. Full plastic build. Gets Excessive Hot when writing for more than 10 mins. I mean literally HOT!! 2. Actual size of flash drive is 114.6gb. SanDisk should pay heed as 13.4gb of reserved space is too much. 3. Pack mentions this drive to be usb 3.1 gen1, but my computer detects it to usb3.2 gen1. Refer my attached pics. 4. I had purchased this 128gb variant to store some large Hi-Res audio files. My Yamaha receiver(reads FAT16 & FAT32 pendrives) didn't recognise this drive as it is an exFAT file system. Now the tricky part is windows cannot format exFAT files larger than 32gb to FAT32 as the OS recognises the file system more than 32gb as exFAT or NTFS only. So my purpose of getting this 128gb drive to copy and hear my DSD and FLAC files was getting defeated. Since I got a little bit of knowledge of MS-DOS, tried formatting this drive by cmd prompt using disk partition, selecting and cleaning the disk and changing the partition to GPT. No luck! Repeated the same process now converting the partition back to MBR. Still I was unable to convert the exFAT file system to FAT32. No where in the product description it was mentioned to be ab exFAT file system. My previous 2 SanDisk ultra fit pen drives were 32gb and they were both FAT32 by default. Ultimately I downloaded a partitioning tool and was able to alter the FS. Bingo! 4. Write speed is below par. Don't expect anything above 25MB/s. I copied 20 files of avg 5gb size and got an average write speed of 17-18 MB/s. 5. I Will not buy SanDisk drives in future this is one promise I made to myself today. Hope my observations help you in your purchase of pendrives. All of you take care👍

Before buying this USB drive, I was skeptical as it had extremely negative reviews. Everyone had commented about the speed of writing data to the disk, saying it was extremely slow. The sole purpose of buying this pen drive was so that I could use it for music in my car. It was only logical that I’d want a cheap pen drive for everyday rough usage. And also one that was small in size. I didn’t want it breaking while connected. After coming across this, and looking at the price, I purchased it, though it had negative reviews. For my purpose, this pen drive has performed exceptionally well! I have no problems whatsoever. Before I write my review, let me suggest you people; before you buy, make sure you know WHY you are buying it. Are you looking to buy a USB drive for office purposes? Buy a strong metal USB drive, with good amount of speed and warranty. Are you looking to buy for general usage? Then compromise a bit on quality if cost is an issue. My purpose was to just transfer music to this and connect it to my car. And it has served me perfectly for it. 1. In contrast to most of the negative reviews, I am happy about the transfer speeds. I am a patient person, and I am not too concerned about transferring a movie within a minute. Don’t get hung up on specifics. A lot of things which you read, may not even be applicable to you. So choose wisely. 2. I am happy about the build quality. It’s plastic, but it’s hard. 3. I love the size of this USB drive. I got it specifically because I wanted a small one for using it in the car. 4. Yes, it gets extremely hot. Is it a problem? No. Is it normal? Yes. In most other drives, the materials used and dimensions of the product prevent the heat from reaching outside layer. That doesn’t mean heat isn’t produced. The reason why you can feel the heat on this is because it’s very thin. Overall, I am very happy with the product. I would recommend this to anyone who wants to buy a cheap priced USB drive, which has moderate transfer speeds and moderate build quality.

Good product Must buy

I admire the tiny size design and its transferring speed is very satisfying for my purpose

Modest quality

سريعة جدا. فعالة لنقل البيانات بين الاب توب ولعمل باك أب. ولكن بتسخن بسرعة أوي. خايف تتحرق.

الفلاشة منذ الشراء لا تعمل جيدا و الآن لا تعمل ابدا ارجو الاهتمام بالموضوع

Thumb drive stopped working after a week, used only a couple of times. Very low quality and total waste of money!