Customer reviews from SanDisk
SANDISK - 256GB Ultra Luxe USB 3.1 Flash Drive, Speed Up to 150MB/s (SDCZ74-256G - G46
Average customer rating
2.3
(3 Reviews)
Rating breakdown 3 reviews
5 Stars
1
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
2
50%of customers recommend this product.
(
1 out of
2)
Customer Reviews for SANDISK - 256GB Ultra Luxe USB 3.1 Flash Drive, Speed Up to 150MB/s (SDCZ74-256G - G46
Customer Rating
1
Hot, slow, and delicate
on June 3, 2026
Posted by: joco
I've owned two of these, and at this point both are broken. The first one I got broke under warranty so I got another one, but the second one is now stuck in read-only mode. It's super hot, and super slow. If you're only reading data from it, it's fine, but if you're trying to write data to it, good luck. It gets super hot and it is super slow. It gets so hot to the point where it becomes uncomfortable to touch. This heat is probably what killed the second one, the flash likely just degraded under the heat to the point where it decided it didn't want to work anymore and is now a sad little reminder of my wasted money. I bought it a long time ago when it was cheaper, don't spend your money on this. It might seem fast but after you write maybe 2gb to it the speed drops to like 10MB/sec, literally slower than older USB 2.0 drives. extremely disappointing.
Response from SanDiskBy SM OLS, June 5, 2026
We're sorry to hear about your experience. Excessive heat, reduced write performance, and read-only behavior can indicate an issue with the drive. We suggest backing up the data and reformatting the drive (https://support-en.sandisk.com/app/answers/detailweb/a_id/20821). Kindly ensure to backup your data before reformatting the drive since it is a data-destructive process. If the issue persists, then please contact us directly at: https://support-en.sandisk.com/app/askweb so we can assist you with troubleshooting and warranty options.
Written by a customer while visiting SanDisk
Posted by: Robert Shane
Verified Purchase:Yes
Well-built USB. Fast, very reliable, and just the right size USB.
I would recommend this to a friend!
Written by a customer while visiting SanDisk
Posted by: Sezai
Verified Purchase:Yes
The flash drive you sent me has a speed of only 100m/s, which is not what I was expecting. I was expecting a speed of 400m/s, which is what 3.2 Gen offers.
No, I would not recommend this to a friend.
Response from SanDiskBy SM OLS Team, August 25, 2023
Hello,
I am Will from SanDisk® Global Support Team. All of our products are manufactured on strong hardware platform to sustain daily usage. However, we regret to learn about your experience and since you are facing issues while using this USB Drive, we suggest you to contact us directly so that we can investigate further to know more about the issue in order to isolate the possibilities and provide you with an appropriate resolution. SanDisk® stands behind its commitment to quality and warranty on its products. We will also check if your USB Drive is eligible for a possible replacement. Please contact SanDisk® Support at 1-866-SANDISK or submit a support request at https://support-en.wd.com/app/askweb and we will assist you towards the best possible resolution.
Thank you,
Will,
SanDisk® Support.
I am Will from SanDisk® Global Support Team. All of our products are manufactured on strong hardware platform to sustain daily usage. However, we regret to learn about your experience and since you are facing issues while using this USB Drive, we suggest you to contact us directly so that we can investigate further to know more about the issue in order to isolate the possibilities and provide you with an appropriate resolution. SanDisk® stands behind its commitment to quality and warranty on its products. We will also check if your USB Drive is eligible for a possible replacement. Please contact SanDisk® Support at 1-866-SANDISK or submit a support request at https://support-en.wd.com/app/askweb and we will assist you towards the best possible resolution.
Thank you,
Will,
SanDisk® Support.
Written by a customer while visiting SanDisk