SanDisk Extreme Portable SSD 1TB up to 550MB/s read

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Last updated on March 21, 2024 3:25 am Details
SanDisk Extreme Portable SSD 1TB up to 550MB/s read
SanDisk Extreme Portable SSD 1TB up to 550MB/s read



  • High-speed transfers of up to 550MB/s let you move hi-res photos and videos fast
  • Rugged, water- and dust-resistant (IP-55 rated). Compatible with Windows 8, Windows 8.1, Windows 10 and Mac OS 10.6+
  • Shock-resistant solid state core for greater durability
  • Compact and pocket-sized
  • For PC and Mac users

Additional information

Specification: SanDisk Extreme Portable SSD 1TB up to 550MB/s read



Product Dimensions

‎9.63 x 4.95 x 0.89 cm, 40.82 Grams

Item model number




Form Factor


RAM Size

‎1000 GB

Hard Drive Size

‎1000 GB

Hard Disk Description

‎Solid State Drive

Number of USB 2.0 Ports




Hardware Platform


Are Batteries Included


Item Weight

‎40.8 g

Reviews (5)

5 reviews for SanDisk Extreme Portable SSD 1TB up to 550MB/s read

4.2 out of 5
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  1. Long Lane

    (but still pretty fast).

    I was wondering if the SSD was living up to SanDisk’s promise of Read Speeds of up to 550MB/s and attached it to my Macbook Pro with Thunderbolt 3 port. I used BlackMagicDesign’s Disk Speed Test. I first tested the internal Apple SSD and got 1329 MB/s write and 2209 MB/s read speed (see first picture).

    I then switched drives and tested my SanDisk 1TB SSD (see second picture). Write speed was about 411MB/s and Read speeds around 506MB/s. That is about 90% of advertised max read speed. I would have expected 100%, especially at this price point and having tested it on a computer, which certainly checks all the requirements.

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  2. giulio

    I bought the 500GB version, it is veramenet small and very nice.
    Obviously it is also very fast.
    I bought it to make a backup system for photographs while traveling.
    These are the components:
    1 – OTG cable, to connect the smartphone to the HUB
    2 – USB hub 3 with 4 ports, on a smartphone with powerful batteries there is no need for power supply. But on a smartphone with a low battery there is a need for the power supply
    3 – memory card reader, I got one that reads both SD and CF
    4 – HDD extreno with sufficient capacity to backup, I have used a 500 GB SSD
    With this system from the smartphone I can see both the memory card and the HDD and you can copy the photos directly from the memory card to the HDD. I have done various tests and to copy 8/10 GB of photos takes about 8/12 minutes, depends on the speed of the memory card. So a copy speed of about 15/20 MB / sec.

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  3. Stephen W.

    I installed the vault software that shipped with the sandisk unit, made by what looks to be a 3rd party ENC Security.
    With the software running it all looked good but you only get SYNC if you buy the update for another £14.99 (NOTE to sandisk here, if i spend £300+ on an external ssd, dont be cheap skates give us software with sync.)

    Anyway bought the update and installed it, within 2 mins of it running on my windows X machine BLUE SCREEN, first one ever on this machine in nearly 3 years of day to day use.

    I rebooted the machine and tried again, performed a 12gb sync that worked, tried another and BLUE SCREEN.

    I have now unistalled tha software and will not use it again.

    Great hardware shocking software.

    When the company puts out the GO TO products for SSD’s and sd cards I expect them to have an enterprise level software solution for encrypting the data going onto the drive. Not rely on some third party rubbish.

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  4. George Stark

    I’ve had this about a week and have so far copied 450GB to it without any issues. Windows 7 recognised it straight away and have had 110+MB/s write speeds from an SATA2 7,200 mechanical drive. I bought this to take with me when I go on holiday so I essentially have an ‘off-site’ copy of my most important data.

    It has a very small form factor, being about as thin as my iPhone 7 and is very light…a touch lighter than an AA battery.

    The only problem with this is the included cable. The package comes with a VERY short USB-C to USB-C cable (16cm), with an adapter for those of us don’t have USB-C ports (adding the adapter increases the length to 20cm). The cable is already too short for me to plug into the front USB port of my desktop PC and still be able to rest the SSD on the top of the case but the addition of the adapter seems to make this situation worse because although it effectively adds length to the cable, it doesn’t bend. If you plan to use this with a USB hub or a laptop, the…

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  5. ShammyB

    Let’s get the elephant in the room addressed first; there is a previous version of this drive that had issues with the USB port; it had a tendency to break. 

    SanDisk 500 GB Extreme 500 Portable Solid State Drive

    The drive under review here has a redesigned case that looks like it specifically fixes the issue.

    The drive itself is a standard SSD motherboard (i.e. what you see when you open a standard 2.5 inch SSD case), attached to a USB interface board and encased in a sturdy housing (front face is plastic, edges and back are rubber so if you drop the drive it will most likely hit the ground on the rubber edges… or for the pedantic, the chance of it landing flat on its plastic front face is about 1 in 360 or you really have to be trying to break it!).

    So knowing all this, the first question is ‘what drive is it internally’? Rather than open the drive and potentially break it, there are sneakier ways; I used CrystalDiskInfo to see what the firmware revision was, and then…

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