You have no items in your shopping cart.

Macfixit Australia - Apple Mac RAM, SSD, iPad & iPhone Accessories

Product was successfully added to your shopping cart.

0GB Promise Technology 4-Bay (2.5" Drive) Thunderbolt Pegasus J4

More Views

Out of stock

Currently not available

Product code: *PT-J4ND

Be the first to review this product

Promise Technology


Sold out, not available anymore. Feel free to contact us to find a similar product.

Regular price: $584.99

Savings: $15.00

Your price: $569.99

Always secure shopping.
Corporate, Reseller Or Government Buyer?

Promise Technology

0GB Pegasus J4 
4-Bay 2.5” HDD/SSD Thunderbolt-Enabled Storage Solution

Mac / PC / Thunderbolt
0GB Kit - add Four 2.5" Hard Drives and/or Solid State Drives (SSD) of your selection
The Pegasus J4 is designed from the ground up for creative professionals and multimedia enthusiasts who demand incredible versatility and amazing performance in a storage solution. The J4 enables you to work remotely with a laptop and edit footage on-site, delivers the flexibility to customize the solution, and provides the performance to optimize your workflow.
Save Countless Working Hours
The Pegasus J4 is the fastest 2.5" HDD/SSD Thunderbolt enabled solution available, reaching transfer speeds exceeding 750MB/s with SSDs installed and up to 480MB/s with hard disks (7200 rpm HDD) installed. This incredible performance is not only achieved because Pegasus best leverages Thunderbolt technology, but also because its 4-bay design enables the performance to reach lighting fast levels that competing 1 or 2-bay solutions simply can't match. This is crucial for creative pros, because for you it's all about moving high resolution video and graphic files that take up a lot of space at stunningly high speeds. The J4 now saves you countless working hours!
Incredibly Versatile
The Pegasus J4 offers an amazing amount of versatility. The compact, efficient design enables you to work remotely with a laptop to backup footage and start editing high resolution video right on-site. The J4 can also serve as your secondary storage device, enabling you to copy data from a Mac and Pegasus R4/R6 so you can take projects to a client and instantly edit content without even having to go back to your office. This is perfect for those clients who just never give you enough time! Plus, its aluminum design is lightweight and durable so it'll easily handle the knocks you encounter when moving around.
Just How You Like It
The Pegasus J4 delivers the flexibility to purchase a plug and play model with 4 hard disks pre-installed or to purchase the J4 enclosure and customize the solution to meet the requirements of your application. Graphic artists and photographers working with raw images and high-resolution files can deploy a solution with the compatible drives of their choice to meet the requirements of their application.
Your Work is Too Important to Lose
The Pegasus J4 conveniently lets you configure the RAID level required for your application. If you need the data protection of disk mirroring, configure the J4 in RAID 1 so your data will be safe even if an installed disk fails. If you need super-fast speed for video editing, configure the J4 in RAID 0. Even better, combine both needs and configure two daisy chained J4s in a RAID 10 (RAID 1 + RAID 0) for performance and redundancy. Creative professionals can now enjoy lightning fast and safe backups for all their huge video and photo libraries.
The Perfect Companion for a Mac mini
The Pegasus J4 is the perfect stackable companion for a Mac mini to create a cost effective server-storage solution. By combining a Mac mini with the J4, you can enjoy the peace of mind provided by a Thunderbolt enabled RAID storage device as well as the freedom to add Pegasus devices when you require more capacity. Plus, if you need more power you can always update to the next generation of Mac mini servers for state-of-the-art performance.
About Thunderbolt Technology
Thunderbolt technology is a revolutionary, high-speed, dual-protocol I/O technology developed by Intel and Apple, designed for performance, robustness, simplicity, and flexibility. Thunderbolt delivers two channels of 10Gb/s (1.25GB/s) per port of blistering performance. PCI Express (PCIe) expansion bus protocol is integrated with DisplayPort protocol in a single cable for simultaneous data transmission and video output with no performance degradation. The throughput speed of Thunderbolt enables transfer of terabytes in a small fraction of time of competing connection technologies. The huge bandwidth allows digital media professionals to edit HD video stored on the Pegasus with software (such as Apple Final Cut, Autodesk Smoke, or Adobe Premiere), improve work flow efficiency, and save time and money. Thunderbolt and the Thunderbolt logo are trademarks of Intel Corporation in the U.S. and/or other countries.
  • 2 x Thunderbolt technology ports at 10 Gb/s (1.25GB/s)
  • Supports RAID 0, 1 and JBOD
  • Supports 2.5" SATA SSD and HDD
  • Delivers over 750MB/s with SSDs (Up to 480MB/s with 7200 rpm HDDs)
  • Supports Time Machine in Mac OS X
  • Supports daisy chaining up to 6 Thunderbolt technology-compatible devices
  • 2 Year Promise Technology Warranty

Product Specifications

Manufacturer Part Number

  • PRJ4US

Interfaces Supported

  • Thunderbolt

Port Configuration

  • (2) Thunderbolt

Operating System Support

  • Mac OS X 10.6.8 or later
  • Not Windows compatible

Supported Drive Type


  • Fan

Electrical Requirements

  • Power adapter (included)

Power Supply

  • Auto Switching 100 ~ 240v Power Supply


  • 3.53 lb (1.6 kg)


  • 2 Year Australian Replacement Technology Warranty

Note: This item does NOT support booting at this time. Per the manufacturer: "The J4 has to use a driver for Mac OS X as there is no EFI (BIOS) support for it at the initial release, but it will be added in the next Service Release but that date is not yet determined as all resources are engaged in Thunderbolt2 work to support the MacPro release. So you can boot from the R4/6 and J2, but not the J4 at this time."


Manufacturer provided specifications for Promise Technology p/n PRJ4US UPC#: 704118092339

Additional Information

Colour Silver
Capacity Enclosure Only
Number of Bays/Drives 4
Type No
Model Identifier N/A
Connection Thunderbolt 1 (10Gb/s)
Form Factor 2.5 inch
Manufacturer Promise Technology
Manufacturer P/N PRJ4US
UPC 704118092339
Shipping Restriction N/A

Australian Owned Business 

Macfixit Australia is an Australian owned and operated business based in Melbourne, Victoria and we've been operating since 2005.

Fast Flat Rate Shipping on all orders

Shipping cost is $9.90 (flat rate) for any size order. Express Options are available in cart/checkout. All in-stock orders are shipped the same day if received by 10.30 AM (Eastern Time Victoria). Orders received after 11:00 AM are shipped the following business day.

100% Satisfaction Guaranteed 

We fully guarantee all of our products. If for some reason you are not happy with any item you purchase from us you may return it for a refund (see Return Policy). 

We do NOT sell or trade our customer information

Macfixit Australia respects your privacy. We never rent, sell or trade your contact information such as your name, address, phone# or e-mail address.

Convenient and Secure Shopping

All items on this website can be purchased safely online using our secure shopping cart. Security is provided by the best internet commerce technology available. We use Symantec Norton as our SSL (Secure Socket Layer) digital certificate provider, allowing our customers the strongest certificate services available. Our website is also scanned by McAfee Secure daily. Every McAfee SECURE certified site is tested and certified to be free of malware, viruses, phishing attacks.

Customer Reviews Gold Stars gold stars

We are part of the Google Trusted Store program for your security and verification of our service. Check out our Google Trusted Stores Reviews here.

Customer Service 

At Macfixit Australia) we’re 100% committed to serving our customers. We check phone and e-mail messages throughout the day and, in most cases we respond within minutes of receiving them. Please feel free to contact our Customer Service Department with any questions at 03 9329 4343 Mon-Fri, 10am to 5.30pm (Melbourme, Victoria Time), or e-mail us under this link.