Fusion Flex J3i - 3-drive Internal Mounting System for Mac Pro 2019

Add up to 52TB of Storage!

3-drive Internal Mounting System

Fusion Flex J3i

3-drive mounting system for Mac Pro (2023 or 2019)

Add your own SATA drives

Mount up to Three SATA Drives in Your  Mac Pro

While 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.
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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
Fusion Flex J3i Hard Drives Diagram
Fusion Flex J3i SSDs Diagram

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 0 Performance

RAID your SSDs in the Fusion Flex J3i to achieve superior performance
Two 2.5" SATA SSDs RAID 0
2019 Mac Pro Speed Charts
Three 2.5" SATA SSDs RAID 0
Classic Mac Pro Speed Charts
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.
Fusion Flex J3i Side Profile

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.
Fusion Flex J3i Mounting Kit

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.
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Classic Mac Pro Hard Drives Moved to Mac Pro (2019) with Fusion Flex J3i

Key Features

Add up to 52TB of Storage Icon

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

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 and Custom Design Icon

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.

Free Lifetime Tech Support
See Tech Specs for footnotes.
Product specifications and information subject to change without notice. Computer hardware and accessories featured in photos that are not included with product are shown for illustration purposes; items sold separately.

Fusion Flex J3i