Transcend

Transcend 960GB JetDrive 855 Thunderbolt NVMe PCIe Gen 3x4 Portable Solid State Drive

Name: Transcend TS960GJDM855 960GB JetDrive 855 Thunderbolt NVMe PCIe Gen 3x4 Portable Solid State Drive with Enclosure
Brand: Transcend
SKU: B07DCFM37F

Status: Transcend TS960GJDM855 960GB JetDrive 855… (960GB portable SSD Thunderbolt): Unavailable on Amazon as of 2026-10-18 16:17 UTC. SpecPicks has no in-stock 960GB portable SSD Thunderbolt on file; an Amazon search for "960GB portable SSD Thunderbolt" lists current offers with the same specs. eBay sellers may still list this model new or used.

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Bottom line: The Transcend TS960GJDM855 960GB JetDrive 855 Thunderbolt NVMe PCIe Gen: Rated up to 1,600 MB/s read and 1,400 MB/s write; main trade-off: supported Macs are limited to 2013-2017 era models.

Unavailable on Amazon as of 2026-10-18 16:17 UTC

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

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. About the author →

Pros & Cons

Pros

✓ Rated up to 1,600 MB/s read and 1,400 MB/s write
✓ 960GB NVMe PCIe Gen3 x4 capacity for large Mac libraries
✓ Aluminum Thunderbolt enclosure included in the kit
✓ Installation tools included, no separate driver kit needed

Cons

✗ Supported Macs are limited to 2013-2017 era models
✗ Requires macOS High Sierra (10.13) or later
✗ PCIe Gen3, not the faster Gen4 standard
✗ Listing doesn't say which Thunderbolt version the enclosure uses

Manufacturer description

The Transcend JetDrive 855 is a 960GB NVMe SSD kit for Apple owners who want to get more speed and storage out of an older Mac. It pairs a JetDrive 850 PCIe Gen3 x4 NVMe SSD with a sleek aluminum Thunderbolt enclosure. Transcend rates the drive at up to 1,600 MB/s read and 1,400 MB/s write, so large photo libraries, video projects and app installs move far faster than on a SATA-era drive. The JetDrive 855 is built for a specific set of Macs: MacBook Air 11" and 13" (Mid 2013 to 2017), MacBook Pro Retina 13" and 15" (Late 2013 to Mid 2015), Mac mini (Late 2014) and Mac Pro (Late 2013). It…

SpecPicks Verdict

SpecPicks scored Transcend TS960GJDM855 960GB JetDrive 855 Thunderbolt NVMe PCIe Gen… using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Transcend'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

Which Macs is the Transcend JetDrive 855 compatible with?

Per the listing: MacBook Air 11" and 13" (Mid 2013 to 2017), MacBook Pro Retina 13" and 15" (Late 2013 to Mid 2015), Mac mini (Late 2014) and Mac Pro (Late 2013).

How fast is the JetDrive 855?

Transcend rates it at up to 1,600 MB/s sequential read and 1,400 MB/s sequential write, using an NVMe PCIe Gen3 x4 interface. Real-world speeds depend on your Mac and workload.

What macOS version do I need?

The drive requires macOS High Sierra (10.13) or later. Update your Mac to High Sierra or newer before you install it.

What comes in the box?

The kit includes a JetDrive 850 NVMe PCIe SSD, an aluminum Thunderbolt enclosure and installation tools. Check the product listing for the full packing list.

What warranty does the JetDrive 855 have?

The warranty length isn't listed in the product details. Check the Amazon listing or Transcend's website for current warranty terms before you buy.

Key Features

Compatible with MacBook Air 11" & 13" (Mid 2013 – 2017), MacBook Pro Retina 13" & 15" (Late 2013 – mid 2015), Mac Mini (Late 2014), and Mac Pro (Late 2013)
Up to 1, 600 MB/s Read; 1, 400 MB/s write
Jetdrive 850 NVMe PCIe Gen3 x4 SSD inside a Thunderbolt enclosure
Installation tools included
Compatible with devices running macOS high Sierra (10.13) or later

Full Specifications

Brand	Transcend
Color	Colorless
Model Name	JetDrive 855
Read Speed	1600 megabytes_per_second
Form Factor	Portable
Media Speed	1400
Model Number	TS960GJDM855
Compatibility	Mac
Built-In Media	JetDrive 855 SSD, Screwdrivers (T5 & P5), Quick Installation Guide, Warranty Card
Hard Disk Size	960 GB
Item Type Name	JETDRIVE
Hard-Drive Size	960 GB
Mfr Part Number	TS960GJDM855
Number of Items	1
Special Feature	Portable
Hardware Platform	Mac
Installation Type	External Hard Drive
Compatible Devices	Laptop
Data Transfer Rate	1600 gigabits_per_second
Enclosure Material	Aluminum
Full listing title	Transcend TS960GJDM855 960GB JetDrive 855 Thunderbolt NVMe PCIe Gen 3x4 Portable Solid State Drive with Enclosure

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