Transcend, JetDrive 855, 480GB, NVMe PCIe Gen3 x4 SSD, Thunderbolt 10 Gb/s
Transcend's JetDrive 855 Thunderbolt™ PCIe portable SSD combines a JetDrive 850 PCIe SSD with a sleek aluminum Thunderbolt enclosure to instantly revitalize your Thunderbolt-equipped MacBook Pro, MacBook Air, Mac mini, or Mac Pro!
Thunderbolt technology in a sleek case
Transcend's JetDrive 855 features a 10Gb/s Thunderbolt interface, capable of blazing-fast file transfers. The drive is housed in a sleek, aluminum-alloy enclosure designed to tastefully complement your Mac's simple, clean lines. In addition, the inner SSD is removable for more versatile use based on your preferences.
Expand storage in a flash
Upgrading your Mac with a Transcend JetDrive 850 allows you to increase storage capacity to up to 960GB, ensuring you have plenty of space for your documents, photos, music, and videos.
Feel the need for speed
Transcend's JetDrive 850 utilizes the PCIe™ Gen3 x4 interface paired with the latest 3D NAND flash, resulting in compelling performance of up to 1,600MB/s read and 1,400MB/s write*. Transcend's JetDrive 850 gives you fluid, real-time performance for demanding professional tasks, video editing, or 3D graphics rendering.
*Note: Performance tested with AJA v1.0 / Black Magic v3.1.
JetDrive Toolbox
Exclusively developed by Transcend, JetDrive Toolbox helps maintain a healthy and efficient SSD by keeping it up-to-date, preventing functional degradation, and predicting problems before they happen. JetDrive Toolbox clearly displays drive information, S.M.A.R.T. status for possible drive failure, health indicators for estimated lifespan, and facilitates firmware upgrades. It can also identify your Mac model to quickly find out which of our Apple product suits your computer.
All the tools you need
Inside you'll find:
- JetDrive 855 Thunderbolt PCIe portable SSD
- Screwdrivers (T5 & P5)
- Rubber feet
Upgrading a Mac Pro or Mac mini requires additional screwdrivers.
| Solid state drive |
| Write speed |
1400 MB/s |
| Read speed |
1600 MB/s |
| NVMe |
Yes |
| Interface |
PCI Express 3.0 |
| SSD capacity |
480 GB |
| Ports & interfaces |
| Data transfer rate |
10 Gbit/s |
| Thunderbolt version |
1 |
| Thunderbolt technology |
Yes |
| Features |
| Certification |
CE/FCC/BSMI/KC/RCM/EAC |
| Linux operating systems supported |
No |
| Mac operating systems supported |
Yes |
| Windows operating systems supported |
No |
| Housing material |
Aluminium |
| Product colour |
Silver |
| Power |
| Operating voltage |
15 V |
| Operational conditions |
| Storage temperature (T-T) |
-40 - 85 °C |
| Operating temperature (T-T) |
0 - 60 °C |
| Weight & dimensions |
| Weight |
88 g |
| Height |
31.5 mm |
| Depth |
18.2 mm |
| Width |
120 mm |
| Logistics data |
| Harmonized System (HS) code |
84717070 |

Have you ever thought of trading in your old smartphone?
Recycling your phone is a great way to help the environment and earn some extra money, and Clove Technology offers a recycling programme that pays you for your old phone(s)!
So if you're about to buy a new phone from us, or you've recently bought one, why not sell us the handset you no longer need?
How much will you offer for my phone?
That depends on its age and condition. More recent phones generally have a higher value than old ones, but other factors can affect value. These include if the phone is working or not and its network lock status. Fully working phones with an unlocked network status will command a higher value if they are in good condition.
We pledge to beat the major recycling services operating in the UK on the price they offer for your
How do I get my phone(s) back to you?
On our recycling site SEARCH, for your phone and provide details of its status and condition. We will then offer you a price for your phone. If you choose the option to Sell Now, a recycling pack to you for returning your phone.
Alternatively, you can call our recycling team on 0330 1180686, choosing option 2.