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header-product HDD Cage Sonnet Fusion Flex J3i Midi Tower Black 140mm x 120mm x 87mm
307.99 €

HDD Cage Sonnet Fusion Flex J3i Midi Tower Black 140mm x 120mm x 87mm

HDD Cage Sonnet Fusion Flex J3i Photo 1
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HDD Cage Sonnet Fusion Flex J3i Photo 8
HDD Cage Sonnet Fusion Flex J3i Photo 1
HDD Cage Sonnet Fusion Flex J3i Photo 2
HDD Cage Sonnet Fusion Flex J3i Photo 3
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HDD Cage Sonnet Fusion Flex J3i Photo 5
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HDD Cage Sonnet Fusion Flex J3i Photo 7
HDD Cage Sonnet Fusion Flex J3i Photo 8
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HDD Cage Sonnet Fusion Flex J3i Midi Tower Black 140mm x 120mm x 87mm

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Short description

The Sonnet Fusion Flex J3i is a black HDD cage designed for Midi Tower chassis. It measures 140mm in width, 120mm in depth, and 87mm in height. The product includes two 2.5-inch drive mounting brackets and a SATA data/power cable assembly, making it easy to install additional drives. This cage enhances your system's storage capabilities while maintaining a sleek appearance.
Available for order: 2 pcs.
Warranty: 2 Years
SKU: 4042718
Manufacturer: Sonnet
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
24.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
29.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.10 kg)
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
29.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Product information

Description

The Sonnet Fusion Flex J3i is an internal HDD/SSD mounting cage designed to fit inside the 2019 Mac Pro (and compatible Midi Tower chassis). It lets you add up to three SATA drives using the available space next to the PCIe card slots, expanding storage capacity beyond the Mac Pro’s internal SSD limits. The unit is constructed from heavy-gauge aluminum and includes the mounting hardware and custom power and data cables required for installation.

Advantages

The Fusion Flex J3i supports two 3.5-inch hard drives plus one 2.5-inch SATA SSD, or alternatively three 2.5-inch SSDs using the included mounting plates and screws. Shock and vibration isolators are provided for 3.5-inch drives to reduce cross-coupled vibration and help prevent read/write errors. Its custom power and data cable assembly produces a clean internal appearance and the rugged aluminum construction matches the Mac Pro’s internal styling.

Suitable for

  • Users who need to increase internal storage capacity in a 2019 Mac Pro
  • Installing multiple SATA HDDs or SSDs inside a compatible Midi Tower or Mac Pro chassis
  • Migrating 3.5-inch drives from older 2010/2012 Mac Pro systems into a 2019 Mac Pro

Key specifications

  • Model: Sonnet Fusion Flex J3i (MPN: FUS-FLEX-J3)
  • Supported drives: up to two 3.5-inch HDDs + one 2.5-inch SATA SSD, or three 2.5-inch SSDs
  • Included accessories: two 2.5-inch mounting brackets, mounting plates and screws for 2.5-inch drives, SATA data/power cable assembly
  • Material: heavy-gauge aluminum
  • Dimensions (approx.): 140 mm x 120 mm x 87 mm
  • EAN: 0732311012990

How to use

Install the Fusion Flex J3i into the available space beside the PCIe slots in your 2019 Mac Pro or compatible Midi Tower chassis. Mount your chosen drives using the supplied mounting plates, brackets and screws, connect each drive using the included SATA data/power cable assembly, and secure the cage in place. If desired, configure drives in RAID (for example RAID 0) at the system level to improve sequential performance for SSDs. No additional adapters or cables are required when migrating drives from 2010/2012 Mac Pro systems.

Usage recommendations

For best reliability, use vibration-isolated 3.5-inch drives for mechanical HDDs and ensure proper airflow inside the chassis. When configuring multiple SSDs for maximum performance, verify RAID settings and maintain current backups, as RAID 0 increases performance at the expense of redundancy.

Specifications

Number of storage drives supported:
3
Product colour:
Black
All features
Storage drive sizes supported:
2.5, 3.5
Compatible chassis type:
Midi Tower

Storage

Number of storage drives supported:
3

Design

Product colour:
Black
Compatible products:
Mac Pro 7,1 (2019)
Certification:
RoHS 3 (Directive 2015/863) IEC62368-1 and IEC62368-2

Weight & dimensions

Height:
87 mm
Width:
140 mm
Depth:
120 mm

Packaging content

Packaging content:
Fusion Flex J3i 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
Screws included:
Yes

Other features

Type:
HDD Cage

Description

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Customer reviews

Customer questions

FAQ

How much does the HDD Cage Sonnet Fusion Flex J3i cost, and is it available for purchase?

The price is 307.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 24.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Sonnet products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Sonnet service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: number of storage drives supported, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for HDD Cage Sonnet Fusion Flex J3i?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.