Mount up to Three of your SATA Drives in Your Mac Pro

The Mac Pro® offers fast 3,400 MB/s internal SSD storage, capacity is limited to 8TB. Connecting external drives is an option, but why not just use the space and connections inside the Mac Pro to add capacity? Sonnet’s Fusion™ Flex J3i makes it easy, enabling you to securely install and connect up to three SATA drives (sold separately) in the available space next to the PCIe card slots.

Install Two 3.5-inch Drives Plus One 2.5-inch SSD Into Your 2023 or 2019 Mac Pro

Not only does the Fusion Flex J3i provide support for mounting two 3.5-inch hard drives of your choice, the Flex’s custom design provides mounting support for an additional 2.5-inch SATA SSD. Of course, the necessary mounting hardware and connecting cables are included for a clean installation.

Drives sold separately

Or Install Three 2.5-inch SSDs

The Fusion Flex J3i includes mounting plates and screws that enable you to install three 2.5-inch SSDs in total.

Drives sold separately

Fusion Flex J3i RAID O Performance

RAID your SSDs in the Fusion Flex J3i to achieve superior performance

Two 2.5″ SATA SSDs RAID O

Three 2.5″ SATA SSDs RAID O

Performance based on ATTO Disk Benchmark (available on the Apple® App Store ) test results with SanDisk® Ultra II 1TB SSDs with 8MB and greater transfer size. Two SSD RAID 0 tested with both SSDs connected to internal SATA ports. See our Performance PDF for additional benchmarks and details.

Custom Design, Rugged Construction

Sonnet designed the Fusion Flex J3i to make maximum use of the space and connections inside the Mac Pro; constructed out of heavy-gauge aluminum, the J3i looks right at home inside the computer. Shock and vibration isolators for 3.5-inch drives protects each drive from cross-coupled vibration from the other, safeguarding against read/write errors and retries. Mounting plates for 2.5-inch drives are included, so there’s no need to purchase separate pieces to use them. Custom power and data cables deliver a clean look to the installation.

View Fusion Flex J3i in Detail

Migration Assistant

The Fusion Flex J3i makes it easy to move two 3.5-inch hard drives from your 2010 or 2012 Mac Pro into your 2019 or 2023 Mac Pro, with no additional adapters or cables required.

Key Features

Name: Sonnet Fusion Flex J3i 3-drive mounting system for Mac Pro
Brand: Sonnet
SKU: SNT-FUS-FLEX-J3
Price: 434.5 AUD
Availability: InStock

Add up to 52TB of Storage

Mounts up to three cost-effective SATA drives (sold separately) inside a Mac Pro. You get to choose the drives that suit your needs.

Mounts up to Three SATA Drives

Custom bracket and cables support one 2.5-inch SATA SSD plus two 3.5-inch SATA drives, or three 2.5-inch SATA SSDs.

Rugged & Custom Design

Vibration-absorbing isolators safeguard reliable disk operation whether in the studio or on the road; designed to make maximum use of the space and connections inside the Mac Pro.

Lifetime Tech Support

Sonnet was established in Irvine, California in 1986. Since then, we’ve pioneered and brought to market many innovative and award-winning products that enhance the performance and connectivity of Mac, Windows, and other industry-standard computers. Many of our employees have been with the company for more than 20 years. We have a wealth of knowledge about our current and past products. Should you ever need technical support on one of our products, contact us; we’ll be around to help you.

Product Specifications

Mac Compatibility

Mac Pro 14,8 (2023) Desktop and Rackmount

Mac Pro 7,1 (2019) Desktop and Rackmount

Boot Support

Mac Pro 2019 (Intel)

SSD connected to USB port bootable
SSD/HD connected to SATA port bootable(1)

Mac Pro 2023 (M2 Ultra)

SSD connected to USB port bootable(2)
SSD connected to SATA port n ot bootable

Hardware

Part Number FUS-FLEX-J3
Warranty 2-year
Form Factor Expansion bracket
Dimensions 140 x 120 x 87 mm
Compliance. RoHS 3 (Directive 2015/863)
IEC62368-1 and IEC62368-2 Safety

Package Contents

Fusion Flex J3i Expansion Bracket
2.5-inch drive mounting bracket x2
2-drive SATA data/power cable assembly
USB-3 to SATA data/power adapter cable
Vibration isolators and mounting screws

Documentation and FAQs

Product Manual

Technical Notes

Booting from Mac Pro 2019 from SATA port requires Security Setting change to enable external boot because macOS treats Mac Pro 2019 SATA ports as external.
To create a boot volume for Mac Pro 2023: a) install SSD in Fusion Flex J3i and connect to internal USB 3 port; then b) format SSD and install macOS.

Great product

Strong and perfect fit. Perfect for a technician

Great device - highly recommend it

I am using the BR10 to connect my older sub-woofer to my newer wireless 2.0 speakers thereby making it a 2.1 system that works very well. It was simple to set up and is easy to use and provides great sound and extra punch to my music. The app is really good as well and the extra bass function provides some crazy bass out of the sub-woofer if you want to terrorise the dog.

Highly recommend this relatively cheap device that has bridged the gap between my old and new music system.

Impressed with Koala Audio and Pianoteq

I recently purchased Pianoteq 8 Standard from Koala Audio and am very happy with the service I received.
I'm loving Pianoteq and took advantage of a recent sale to upgrade to Pianoteq 8 Pro. Again, the service I received from the owner on the phone was first class.
Five stars.
🌟🌟🌟🌟🌟

Sonitus Mini Trap Bass Trap ( 4 Pieces)

Great price for quality camera accessory

Great price got me to finally get the Blackmagic evf for the pocket. Its awesome, should got one ages ago

Translation missing: en.general.currency.dropdown_label

Translation missing: en.general.currency.dropdown_label

Sonnet Fusion Flex J3i 3-drive mounting system for Mac Pro

Mount up to Three of your SATA Drives in Your Mac Pro

Install Two 3.5-inch Drives Plus One 2.5-inch SSD Into Your 2023 or 2019 Mac Pro

Or Install Three 2.5-inch SSDs

Fusion Flex J3i RAID O Performance

Custom Design, Rugged Construction

Migration Assistant

Key Features

Add up to 52TB of Storage

Mounts up to Three SATA Drives

Rugged & Custom Design

Lifetime Tech Support

Hardware

You may also like

Customer Reviews

Translation missing: en.general.currency.dropdown_label

Translation missing: en.general.currency.dropdown_label

Translation missing: en.general.currency.dropdown_label

Translation missing: en.general.currency.dropdown_label

Let customers speak for us

Translation missing: en.general.currency.dropdown_label

Sonnet Fusion Flex J3i 3-drive mounting system for Mac Pro

Mount up to Three of your SATA Drives in Your Mac Pro

Install Two 3.5-inch Drives Plus One 2.5-inch SSD Into Your 2023 or 2019 Mac Pro

Or Install Three 2.5-inch SSDs

Fusion Flex J3i RAID O Performance

Custom Design, Rugged Construction

Migration Assistant

Key Features

Add up to 52TB of Storage

Mounts up to Three SATA Drives

Rugged & Custom Design

Lifetime Tech Support

Hardware

You may also like

Customer Reviews

Translation missing: en.general.currency.dropdown_label

Translation missing: en.general.currency.dropdown_label

Translation missing: en.general.currency.dropdown_label

Translation missing: en.general.currency.dropdown_label

Search

Stay in the know

Let customers speak for us