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SANDISK 4TB Extreme Portable SSD (Old Model) - Up to 1050MB/s, USB-C, USB 3.2 Gen 2, IP65 Water and Dust Resistance, Updated Firmware - External Solid State Drive - SDSSDE61-4T00-G25
Sandisk

SANDISK 4TB Extreme Portable SSD (Old Model) (SDSSDE61-4T00-G25)

Bottom line: The SANDISK 4TB Extreme Portable SSD ($749.00 on Amazon as of 2026-10-21 12:20 UTC): Up to 1050MB/s read and 1000MB/s write, fast enough to edit 4K video off the drive; main trade-off: listed as the Old Model, so a newer revision of the line exists.

$749.00

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Up to 1050MB/s read and 1000MB/s write, fast enough to edit 4K video off the drive
  • ✓ 4TB capacity holds entire RAW photo and video archives without swapping drives
  • ✓ IP65 water and dust resistance plus up to 3-meter drop protection
  • ✓ 256-bit AES hardware encryption with password protection built in

Cons

  • ✗ Listed as the Old Model, so a newer revision of the line exists
  • ✗ Speeds are SanDisk internal-testing figures and depend on your host device
  • ✗ USB 3.2 Gen 2 caps throughput below Thunderbolt or USB4 external drives
  • ✗ No included Thunderbolt cable, so Mac users may need their own adapter

Manufacturer description

The SanDisk 4TB Extreme Portable SSD (SDSSDE61-4T00-G25) puts NVMe-class speed in a pocketable shell, hitting up to 1050MB/s read and 1000MB/s write over USB-C (USB 3.2 Gen 2). That is enough headroom to offload a full card of RAW photos or edit 4K footage straight off the drive instead of copying it to a workstation first. This updated-firmware revision of the older Extreme Portable model carries SanDisk's higher durability qualification: up to 3-meter drop protection and an IP65 water and dust rating, so rain on a shoot or a fall off a camera bag is survivable. The molded carabiner loop…

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SpecPicks Verdict

SpecPicks scored SANDISK 4TB Extreme Portable SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Sandisk's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How fast is the SanDisk 4TB Extreme Portable SSD?

SanDisk rates it at up to 1050MB/s read and 1000MB/s write based on internal testing. Real speeds depend on your host device, cable, and port; a USB 3.2 Gen 2 USB-C connection is required to approach those numbers.

Is this SSD waterproof and drop-proof?

It carries an IP65 water and dust resistance rating and is qualified for up to 3-meter drop protection. IP65 means it resists dust and low-pressure water jets, not submersion, so do not dunk it.

Does it work with a Mac and with USB-A ports?

It connects over USB-C using USB 3.2 Gen 2. For USB-A ports or older machines you will need the appropriate adapter or cable. Check the product listing for the exact cables included in the box.

Can I password-protect the files on this drive?

Yes. The drive includes password protection with 256-bit AES hardware encryption, so the data is secured on the drive itself rather than by software alone.

Why does the listing say Old Model, and does that matter?

This is the earlier Extreme Portable revision with updated firmware, upgraded from the original 2-meter drop and IP55 ratings to 3-meter drop and IP65. It still delivers the full 1050MB/s rated read speed, so the label refers to the product generation, not reduced performance.

How much storage is actually usable on the 4TB model?

SanDisk counts 1TB as 1,000,000,000,000 bytes, so the capacity your operating system reports will be lower than 4TB. Formatting overhead reduces usable space further.

Key Features

  • Get NVMe solid state performance with up to 1050MB/s read and 1000MB/s write speeds in a portable, high-capacity drive(1) (Based on internal testing; performance may be lower depending on host device & other factors. 1MB=1,000,000 bytes.)
  • Up to 3-meter drop protection and IP65 water and dust resistance mean this tough drive can take a beating(3) (Previously rated for 2-meter drop protection and IP55 rating. Now qualified for the higher, stated specs.)
  • 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.(3)
  • Easily manage files and automatically free up space with the SanDisk Memory Zone app.(5)

Full Specifications

BrandSandisk
ColorBlack
Model NameSanDisk Extreme Portable SSD
Read Speed1050 megabytes_per_second
Unit Count1 Count
Form FactorPortable
Media Speed1000
ConnectivityUSB-C
Model NumberSDSSDE61-4T00-G25
Built-In MediaSaftey and Warranty Guide, USB-C to USB-A Adapter, USB-C to USB-C Cable
Item Type NameExternal SSD
Hard-Drive Size4 TB
Mfr Part NumberSDSSDE61-4T00-G25
Number of Items1
Special FeatureEmbrace the incredible storage potential with a whopping 4TB capacity, providing ample space to store and organize your vast collection of files, documents, and multimedia content
Hardware PlatformMac, PC
Installation TypePortable
Compatible DevicesTablet
Data Transfer Rate1050 megabytes_per_second
Enclosure MaterialInformation Not Available
Full listing titleSANDISK 4TB Extreme Portable SSD (Old Model) - Up to 1050MB/s, USB-C, USB 3.2 Gen 2, IP65 Water and Dust Resistance, Updated Firmware - External Solid State Drive - SDSSDE61-4T00-G25

Ready to buy?

SANDISK 4TB Extreme Portable SSD (Old Model) - Up to 1050MB/s, USB-C, USB 3.2 Gen 2, IP65 Water and Dust Resistance, Updated Firmware - External Solid State Drive - SDSSDE61-4T00-G25 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $749.00

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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SANDISK 4TB Extreme Portable SSD (Old Model) - Up to 1050MB/s, USB-C, USB 3.2 Gen 2, IP65 Water and Dust Resistance, Updated Firmware - External Solid State Drive - SDSSDE61-4T00-G25
$749.00
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