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SanDisk 4TB Extreme Portable SSD – Up to 1050MB/s – USB-C, USB 3.2 Gen 2 – External Solid State Drive – SDSSDE61-4T00-G25


(11 customer reviews)
Last updated on August 28, 2023 5:30 pm Details
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  • Get NVMe solid state performance featuring up to 1050MB/s read and up to 1000MB/s write speeds in a portable, high-capacity drive that’s perfect for creating amazing content or capturing incredible footage. Requires compatible devices capable of reaching such speed. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.
  • Up to two-meter drop protection and IP55 water and dust resistance(3) mean this tough drive can take a beating. [(3)Based on internal testing. IPEC 60529 IP 55: Tested to withstand water flow (30 kPa) at 3 min.; limited dust contact does not interfere with operation. Must be clean and dry before use.]
  • Use the handy Carabiner loop to secure it to your belt loop or backpack for extra peace of mind.
  • Help keep private content private with the included password protection featuring 256‐bit AES hardware encryption.(2) [(2)Password protection uses 256-bit AES encryption and is supported by Windows 8, Windows 10 and macOS v10.9+ (Software download required for Mac, see official SanDisk website.)]

Specification: SanDisk 4TB Extreme Portable SSD – Up to 1050MB/s – USB-C, USB 3.2 Gen 2 – External Solid State Drive – SDSSDE61-4T00-G25

Hard Drive

‎4 TB




‎SanDisk Extreme Portable SSD

Item model number


Hardware Platform

‎PC, Mac

Item Weight

‎1.83 ounces

Product Dimensions

‎0.38 x 2.07 x 3.97 inches

Item Dimensions LxWxH

‎0.38 x 2.07 x 3.97 inches



Flash Memory Size



‎Western Digital Technologies, Inc.

Country of Origin


Date First Available

‎April 1, 2021

Photos: SanDisk 4TB Extreme Portable SSD – Up to 1050MB/s – USB-C, USB 3.2 Gen 2 – External Solid State Drive – SDSSDE61-4T00-G25

11 reviews for SanDisk 4TB Extreme Portable SSD – Up to 1050MB/s – USB-C, USB 3.2 Gen 2 – External Solid State Drive – SDSSDE61-4T00-G25

3.3 out of 5
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  1. Andre S.

    I had expectations before buying this SSD. I got the 1TB / 1000mbps version. My expectations were that I would plug it in and immediately get the 1000mbps write speed… Wrong.
    In order for this to happen certain factors have to come into play.
    If you are using hard disk drives to copy from you are wasting your time. Hard Disks will create a bottleneck with this drive. They are just not fast enough to keep up.
    If your operating system resides on an SSD like me or an M.2 you’ll be fine copying files from that drive.
    I got a lot of trouble also setting up this drive as I expected the cable to work in any direction as it’s a USB-C type.
    Nope. It will only work in one direction so if your speed is slow try changing it around. What I also did was I taped the correct end of the cable that is supposed to be attached to the drive so I won’t forget.
    If you use the wrong end you will get slow speeds.
    Also to get good speeds you must use the fastest ports on your pc which should be USB 3.1 Gen 2 Type-A (which is a red usb port), USB 3.1 Gen 2 Type-C (a usb c port), or USB 3.1 (a blue usb port). If your computer is old and does not have these ports you are wasting your money.
    When I first used the drive properly I was getting and still get fluctuating data rates. So I am very wary as to if this drive is working properly or not. I was thinking about sending it back but I got a write speed of over 700mbps using my fastest ports so I decided to hold on to it for now and keep my eye on it.
    I also got 400mbps from my USB 3.1 (blue).
    What i’m thinking of doing is getting a 10Gbps USB 3.1 Gen 2 cable to test out and see if I can get the listed speed for this device. Also to get my hands on a SSD to work off of because right now i’m still using HDD for storage and working off of. Really hope It works out.
    Still giving 3 stars because at this price point it should be as close to the rated speed on the box as possible. Otherwise they should have put the average max speed on the box.

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  2. P. van Win

    This was purchased for use as additional drive for M1 Mac Min which has only 256G drive built in.

    It worked as intended but became very warm even if it was doing nothing, just being connected. Whether or not this is normal I don’t know, but I do know that excessive heat shortens the life of SSDs.

    It also disconnected from the computer intermittently, with the OS thinking that it had been removed, so was proving to be unreliable. Returned for refund, with no problems there.

    I note that there have been other buyers who have had the same problems.

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  3. A. Benjamin

    This product is incredibly frustrating. It would not mount properly on a MacBook Pro M1 Max or an iMac (Intel i9). No product support on the Sandisk site. No instructions. No nothing to support the product. DO NOT BUY THIS FOR YOUR iMAC or MacBook Pro. It does not mount at all. I did everything possible suggested to no avail. Had to return it.

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  4. M.ODVL

    Ce disque dur est très rapide (voir photo) et compact/léger (+petit que mon iPhone!).
    Je peux facilement retoucher des photos en les laissant sur le DD et en utilisant le catalogue Lightroom stocké sur le disque dur.
    De plus il y a vraiment 1to de capacité de stockage dessus (et non 9xx giga comme ça peut être le cas lorsqu’on achète d’autres disque dur).

    Je recommande !
    Si mon avis est utile, faites le savoir merci 🙏🏼

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  5. K

    Die SSD funktioniert einwandfrei auf einem Intel MacBook Pro und auf einem Intel Windows PC aber nicht oder nur sporadisch mit dem M1.

    Die Festplatte wird in den Systeminformationen erkannt aber nicht im Finder angezeigt. (Ja, in den Finder Einstellungen sind externe Festplatten angehakt.)

    Wir haben versch. Kabel getestet – keins hat zuverlässig funktioniert.

    Die Festplatte wurde über zwei Tage und mehrere Versuche, Neustarts & Mac-Updates nur ein einziges Mal im Finder erkannt und konnte verwendet werden. Nach ordentlichem Auswerfen und wieder anstecken wurde die Festplatte wieder nicht im Finder erkannt. Auch eine Formatierung (als Sie einmal erkannt wurde) hat nicht geklappt (auf den letzten Block konnte nicht geschrieben werden). Unter Windows hat die Formatierung einwandfrei geklappt (ExFat).

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  6. RP

    I filled a brand new 1TB drive with about 700GB of data. Two weeks later I could not access the drive–it says “The media is write protected”. According to the Sandisk web site, the drive is toast and I must return it. I have four other of these SSD drives. Now I am worried about them. I am no longer a Sandisk customer! I will advise my students as well.

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  7. Blackomen

    Honestly there is little to complain about considering the price I got this at, I purchased the 2TB extreme pro version (Newer faster version of the two shown here.) I’m impressed with the speed, on USB 3.0 I see just shy of 300mb/s transfer speeds, on 3.1 Gen2 USB-C I see just shy of 1GB/s just as advertised. It also maintained these speeds while copying around 1TB of data to it.

    But this is where I get to my one real complaint, many people on here and elsewhere claim the newer version has a metal shell to help with heat buildup. This is a lie, or at least the outer shell is definitely not metal of any kind. It’s plastic, which can be seen in the closeup pictures I took. Also this drive gets really REALLY hot after transferring over a terrabyte of data to it. Almost too hot to touch, and its all located in the spot just above the connector, which is where the interface would be. This would have led me to rate this product only 2-3 stars had I paid full price for it, as a $600 external drive with these speeds SHOULD have a sold metal shell to help with heat. However since I got it on sale for just $260… I’m willing to largely ignore that fact. Still the heat is a major concern to longevity of the drive. I will say however that it only gets hot enough to cook an egg on if your transferring a ton of data to it over a longer period of time. Moving a 30GB blueray movie to it just got it warm to the touch.

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  8. Will Von Wizzlepig

    I had the 2TB model. Got the amazing transfer speeds USB-C delivers for about four months, and I did not end up using it all that much.

    It did get a little hot when in use.

    Suddenly I could no longer get more than 34mb/s out of it. SanDisk support had me run a speed check utility against it, and then told me I’d have to format it to see if that fixed the speeds (yeah, good thing it was a backup, mostly, or getting the data off of it at 34mb/s would have stunk).

    It did not fix it, and they issued me an RMA. Note that if you RMA with them, they will ask you for your phone number in the form you fill in (it’s a required field), but then they will delay your RMA by asking you to mail it to them (apparently their form loses the data or something stupid like that)- save yourself some time and include it in the description.

    Oh, additionally, SanDisk apparently reserves the right so send you a reconditioned item as a replacement, because, you know, you bought a second-hand piece of junk originally, right? Actually, I am knocking another star off for that.

    I presume the replacement will work, update later if not.

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  9. Kev the Gerbil

    Edit: July 11th 2021
    I have now, finally managed to get a spanking new PS5 console. All the PS4 games stored on the SanDisk are recognised by the PS5 and can be played directly from the extended storage. The speed gains for HZD mentioned below are still maintained.

    Never, ever disconnect the SSD when the PS5 is in standby mode. Only remove it or reconnect it when the console is completely turned off otherwise you risk corrupting the entire SSD.
    Also, do not connect it via the USB A connector on the front of the console. Either use the front USB C port or either of the rear ports.

    This is a review for the SanDisk Extreme 1TB Portable NVMe SSD

    Was running out of space on my PS4 Pro and weighed up all the options for candidates for Extended Storage. With the prospect of eventually getting a PS5 (sigh), I wanted a device that would be somewhat future-proof when connected to the next-gen console.

    The device is barely much larger than a credit card and about three or four credit cards thick. Connected it to the rear USB port and, because the supplied cable is so damn short, it had to rest on the top of the console which is not ideal given the amount of heat that the PS4 Pro chucks out. It was instantly recognized by the console and formatted for extended storage in a matter of seconds, giving about 930Gb of extra space.

    Moving games from the internal disk to the Sandisk is simple. CyberPunk 2077, which is about 109Gb, took roughly 40 minutes so an average of 3Gb / min. This of course is limited by the read speed of the internal PS4 disk rather than the write speed of the Sandisk SSD.

    The real test of course is in how much faster the games load so I did a test using Horizon Zero Dawn. My biggest gripe with this fabulous game is the long load times between location changes, especially if going from say Meridian to the Frozen Wilds Cut.

    For those familiar with HZD, when you finish the game it puts you back at the start of the Looming Shadow quest, so that was my save point for this test.

    With the game installed on the internal disk drive, the time taken from hitting “Continue” to getting control of Aloy was 2min 11secs. I then moved the game to the Sandisk Extended Storage and repeated the test. The time taken from hitting “Continue” to getting control of Aloy was dramatically reduced to just 46 seconds, a speed increase of almost triple. I then tested travelling to various remote campfires and the increased speed was maintained. This is an incredible result.

    I then did various tests with God of War but did not notice any appreciable difference in load times although the initial load screen was definitely faster. I can only assume that some games may be better optimized than others. I will be testing it with Ghost of Tsushima in the near future.

    So is it worth it?. If you play HZD then a very big YES.

    The Cons:
    Compared to a bog standard mechanical 1Tb external drive, it’s £100 more expensive but you wouldn’t gain any speed improvement. Looking ahead, however, I think it’s worth paying the extra for an ultra fast SSD that will also do justice when connected to the next-gen PS5 console (big sigh again).

    The supplied cable is way too short. I’ve now got it connected with a 1Meter USB A to C cable so it can be placed away from any heat sources. In actual use it only gets moderately warm.

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  10. Saitta Salvatore

    Questa è un aggiornamento della mia precedente recensione. Ho potuto costatare che utilizzando le porte giuste e con i cavi appropriati, la velocità di trasferimento arriva tranquillamente agli 800 MB/s. Per il resto, essendo articoli di nuova generazione, mi fido e mi affido alla serietà qualitativa della Sandisk.

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  11. B.Ong

    Amazing little ssd external storage. Wished I had also bought the 2 to version when it was cheaper. I bought the new generation model and I am using it solely for the ps5 to store ps4 games. So far it has been exceptional. Fast read and writes. No issues with storage errors. I had also use the same ssd to connect to the ps4 and had no issues reading it. Be aware that the ps4 needs to have an internal ssd so that it can fully utilize the r/w of the external ssd.

    I am also very amazed how small it is compared to most ssds out there. Almost like a laptop internal ssd. Attached is a picture comparing the size of the ps5 and the storage itself.

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    SanDisk 4TB Extreme Portable SSD – Up to 1050MB/s – USB-C, USB 3.2 Gen 2 – External Solid State Drive – SDSSDE61-4T00-G25
    SanDisk 4TB Extreme Portable SSD – Up to 1050MB/s – USB-C, USB 3.2 Gen 2 – External Solid State Drive – SDSSDE61-4T00-G25
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