Customer Ratings & Reviews

Nice, compact, lots of space. Easy to use. Love it!

SanDisk 4TB external SSD gets very hot to the touch. From the MacOS side, EXFAT format is relatively slow, file indexing takes longer then on spinning platter external HDDs, and has so far resulted in two file table errors that required reformatting the SSD. So recommend formatting as Mac OS Extended. APFS is another and newer format option, although will not support Mac's Time Machine backup. Works well as a portable/travel ready backup.

Good product and awesome speed with this SSD. Would buy again.

works perfect. the best portable hard drive/ backup I've used

Very compact fast and with lots of space. Easy to encrypt.

Compact size, perfect for carrying in my backpack.

I bought it because of the great deal. After using for the first time, it just got very hot during writing and reading data. It will probably break sooner if the heat is too much from using. Not recommend to buy.

Works and performs great... no issues, will my many more.

awesome storage very compact and light and files load up very quickly

Sandish Extreme Portable eHDD is not very responsive. I am not happy with the speed even though it is SSD. Will evaluate as I use and see. Online reviews were not encouraging.

The best product with great quality. I am happy with the pruchase

Drive became unreadable on my Macbook months ago. It wouldn't load. Sandisk provided a firmware update to correct the problem, but it has a note: "Critical: Ensure to create and verify a backup of all critical data to another location or device before updating the firmware on any drive. " How does one back up the disk before updating, and how does one update the disk if you can't load it on a Mac? The update that SanDisk provided must be implemented using a PC, specifically "on a Windows 10 or 11 computer". How does that work? You bother your friends with a PC or go to a tech support station at Best Buy or elsewhere to do this, costing money, and perhaps losing some files. I can go on or you can read the Ars Technica article: "SanDisk's Silence Deafens as High-Profile Users Say Extreme SSDs Still Broken"

We have spent thousands on Sandisk and been loyal customers of their memory cards and drives until now. They knew these had probelms and continued selling them. The first one i received didnt work frim the beginning. They sent a replacement and I uploaded almost 4tb of my kids’ pictures and other things and it has sat on a shelf for months until i needed to access the pictures only to find it doesnt work!! Dont use this to backup anything important.

I just got the product. But haven't use it long enough to give a good or bad yet for the price that i paid for over $300++ But I'd like to give a feed back on customer service onside, I bought the product online for pickup in store. I got the product, a few days later the price when down, I went to the same store I had pickup the product and tried to do the price match, I use credit card to purchase this product, but close the account. At the return counter I asked for store credit instead the lady told me I only have one option which is put it back to my credit card even I told her, the credit card close. I end up with called Best buy customer service and they told me I can do store credit, I went back to the store again, this time they told me they can do store credit, but unfortunately the product was pass 14 days after purchase, can't get store credit. So I overpaid due to lack of knowledge from Best buy.

Buyer beware, this 4TB SSD is prone to corrupt out of the blue and become unmountable. It would disconnect randomly while the mac was on standby and then the files would be corrupted after. Went through 3 rounds of severe data loss with no backups as the backup was also on a sandisk that corrupted. Extremely disappointed in the brand after being a WD user. This product is should be recalled

Purchased a 2TB ScanDisk SSD, which worked well after one year of use. Purchased this 4TB ScanDisk SSD on 12/31/22, and it crashed the first time on 2/28/23, and now again on 4/19/23; lost all of it’s data both times. I have lost tons of GoPro volleyball videos that were taken for my daughter’s college recruiting efforts. I DO NOT RECOMMEND THIS PRODUCT!!!

Could be better very disappointed. I would never recommend this external hard drive

I like this 4TB External USB but latest article about the failure of this drive is disapointing

SanDisk Pro keeps abruptly failing. The drive will unmount and you will not be able to get it to mount again, despite showing up in Disk Utility. You can sometimes recover it using DiskDrill's filesystem rebuild, but occasionally that does nothing. It persists with any filesystem type. This happened just days after using it. Search it online and you will see how common this issue is...

Be careful with this product, don’t keep importan data because is very unstable, sometimes disconnects without any reason , I have some friend who had lose data and not able to recover anything with this drive.