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Customer Ratings & Reviews

Your price for this item is $423.99
The comparable value price is $454.99

Customer reviews

Rating 4.6 out of 5 stars with 589 reviews

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Rating by feature

  • Value

    Rating 4.4 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.6 out of 5 stars

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89%would recommend to a friend

Customers are saying

Customers highly value the Extreme Portable 4TB External USB-C NVMe SSD for its speed, overall performance, and portability. The device's substantial storage capacity and compact size are also appreciated. However, some customers have expressed concerns about heat dissipation during use.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 27 Showing 521-540 of 589 reviews
  • Rated 2 out of 5 stars

    Only lasted a year

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Mine only lasted a year. Now I can’t write anything to it.

    No, I would not recommend this to a friend
    • Brand response from SanDisk Team
      Posted .

      We're sorry to hear about your experience with the drive. This is not the experience we aim to provide. Please reach out to our support team(https://support-en.sandisk.com/app/askweb) so we can assist in troubleshooting or exploring alternative solutions for you. SanDiskConnections

  • Rated 1 out of 5 stars

    Major Failure/Defective rip off

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Constantly has wiped my data 4 different times this is uncalled for I have read multiple reviews on this product as well this is a defective item there are class action lawsuits being pursued on this issue as well I want a full refund have been trying to get a full refund for the past 2 months and still nothing.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Worst ssd

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is the worst ssd I’ve ever had to deal with. If you are a Mac user, don’t purchase this trash ssd. It’s not compatible. Randomly deletes data and unmounts itself. You can’t re mount it no matter what without reformatting and losing all your data. I thought I had a defect but the second replacement has the same issues. This is not Mac compatible

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Faulty, do not purchase.

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Do not purchase. Device will fail and you may loose date. Luckily I was able to return within my purchase window. The device will unmount or eject automatically and at random making it difficult to depend upon. If device is being accessed during this period, you may loose data.

    No, I would not recommend this to a friend
    • Brand response from Sandisk Pro Team
      Posted .

      We sincerely apologize for the inconvenience this has caused. Please allow us to inform you that as you have returned the drive to the place of purchase this issue could also be resolved by our support team available at https://support-en.wd.com/app/askweb. This way we would have tried to investigate the issue and help you in a proper manner. sandisk_pro

  • Rated 1 out of 5 stars

    GARBAGE - JUNK!!!! AVOID

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    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    If there was negative stars that's what this would get along with Sandisk. Bought these 4 months ago and they started failing to mount. Of course there is no support in store and the RMA process from Sandisk has been proving to be a nightmare of no responses and "under review" for who knows how long. I really loved this products of this brand but lately it has gone down hill. Junk Junk Junk.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Horrible customer service

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This purchase made me realize how horrible customer service is at Beat Buy. They don’t honor price match. I found this $60 cheaper on Amazon and they would honor it. They are horrible. Cheaper for you to get these from Amazon.

    No, I would not recommend this to a friend
    • Brand response from SanDisk Team
      Posted .

      We are sorry to hear about your experience with the retailer. Price matching policies are determined by Best Buy, and we recommend reaching out to them directly for clarification. If you have any concerns about your SanDisk product, please contact our support team for assistance. Thank you for your feedback. SanDiskConnections

  • Rated 1 out of 5 stars

    DON'T BUY!! FAILED AFTER ONLY 36 DAYS!!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this item 36 days ago... item has failed and I lost about 3T worth of work. Best Buy doesn't take returns after 15 days and Western Digital (who own SanDisk) only warranties their product for 30 days. Now I see why. $330 down the drain!! DON'T BUY!!

    No, I would not recommend this to a friend
  • Rated 2 out of 5 stars

    Constant Formatting

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Unfortunately approximately every 3 months this ssd gives me no option but to format it. Literally doesn’t give me any choice just gives me warning and that no drive or days is found and format button.

    No, I would not recommend this to a friend
  • Rated 2 out of 5 stars

    Apple doesn't like it.

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great drive but Apple TimeMachine doesn't like it. My mac runs backups fine on other drives, but it rarely works on this one without locking it up. Disk Doctor says it's ok but it's not.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Better get protection on it.

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought and exchanged twice and worked for a bit but then began deleting files automatically. And I upgraded from the lower model for the best experience and this happened twice.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Crashes computer

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I’ve used these sandisk products before and have never had issues. However, this one is slow and causes my computer to freeze. Super frustrating. Of course it sat in my desk for a while before I started using it, so it’s too late to return. I’m super frustrated.

    No, I would not recommend this to a friend
    • Brand response from SanDisk Team
      Posted .

      Hello HaleyZ, Please be informed that poor or slow speeds can be caused by: Host device port speed, Format and file system, Directory with lots of small files, Deeply nested directory etc. Please refer to the mentioned link to know the Common Causes of USB Flash Drive Performance: https://support-en.wd.com/app/answers/detailweb/a_id/17047/related/1 You may open a support ticket in brief at https://support-en.wd.com/app/askweb, the customer support team will contact you as soon as possible. SanDiskConnections

  • Rated 5 out of 5 stars

    SSD Delight

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought this so could download more than 20 years of data (primarily photos) stored on old hard drives. It’s been a pleasure and highly recommend.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Not for PS5

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This was advertised and we were told by staff (we double checked before purchase) that this would work with a PlayStation 5 and it does not, making it completely unnecessary. Unfortunately, my husband is a truck driver and didn’t find out until after he’d left for the month, so we were unable to return it.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Terrible drive

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Keeps deleting itself, it’s happened twice now. Not happy with my purchase and would return if I could.

    No, I would not recommend this to a friend
  • Rated 5 out of 5 stars

    Hard drive

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It’s a fantastic hard drive. It’s rugged design makes you feel at ease when you move it around

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    Not a good buy

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Not even half full and no longer letting me create folders and any files I add do not show up on another machine, always thought Sandisk was bes

    No, I would not recommend this to a friend
    • Brand response from SanDisk Team
      Posted .

      We sincerely apologize for the inconvenience caused to you. We regret to hear about your experience. However, we would request you to submit a support ticket with our support team so that we can investigate the issue further. You may submit a support ticket at https://support-en.wd.com/app/askweb. SanDiskConnections

  • Rated 1 out of 5 stars

    Not worth it

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Stopped working within a year. Lost a lot of pictures.

    No, I would not recommend this to a friend
    • Brand response from SanDisk Team
      Posted .

      We are so sorry to hear about your experience and the loss of your pictures. This isn't the reliability we strive to provide. Please reach out to our support team(https://support-en.sandisk.com/app/askweb) so we can assist in troubleshooting and recovering the files or exploring alternative solutions for you. SanDiskConnections

  • Rated 2 out of 5 stars

    Requires software

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Returned it because later found out have to download Microsoft software.

    No, I would not recommend this to a friend
    • Brand response from SanDisk Team
      Posted .

      Hello Planet,

      We sincerely apologize for the inconvenience caused. Since you have returned your SSD Drive, you could have also contacted our support directly and we could have also assisted you directly over the phone. This way, we could have asked critical questions to resolve your issue. For any other suggestions/ concerns, please open a support ticket at  https://support-en.wd.com/app/askweb and there is also a phone number you can call available at https://www.westerndigital.com/support/international-phone-numbers. SanDiskConnections

  • Rated 1 out of 5 stars

    Always become corrupt

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Worked fine for the first week then external keeps crashing and becoming corrupt now. Unusable.

    No, I would not recommend this to a friend
  • Rated 5 out of 5 stars

    I would buy a 8TB if they made one!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love it! Could connect to my Samsung TV no problems and its light weight!

    I would recommend this to a friend