OWC ThunderBay 4 mini RAID Four-Bay External Thunderbolt 3 Storage Enclosure

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( €349.99 + IVA )

OWC ThunderBay 4 mini Professional Grade 4-Drive HDD and/or SSD Thunderbolt 3 Enclosure For Mac and Windows PC, our 2.5-inch drive bays, Up to 1556MB/s with (2) Thunderbolt 3 ports (Thunderbolt 2/Thunderbolt backward compatible), Daisy-chain up to five additional Thunderbolt devices, Easy RAID setup with included SoftRAID XT software

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OWC ThunderBay 4 mini
Professional Grade 4-Drive HDD and/or SSD Thunderbolt 3 Enclosure For Mac and Windows PC


• Four 2.5-inch drive bays
• Up to 1556MB/s with (2) Thunderbolt 3 ports (Thunderbolt 2/Thunderbolt backward compatible)
• Daisy-chain up to five additional Thunderbolt devices
• Easy RAID setup with included SoftRAID XT software
• Thunderbolt certified for Mac and Windows

The Perfect Combination of Speed, Size, and Convenience for Permanent Access to Your Data


Big RAID System Performance in a Compact Design
The ThunderBay 4 mini is a compact data storage enclosure that you can populate with new or existing 2.5-inch HDDs or SSDs. It’s big on performance and flexibility, yet ThunderBay 4 mini is about the length of a pencil and can weigh as little as 3.1 pounds with drives.
The rugged heat-dissipating aluminum enclosure features two Thunderbolt 3 (Thunderbolt 2/Thunderbolt backward compatible) ports for up to 1556MB/s speeds, so you have more than enough bandwidth to handle personal and business backups — all the way up to today's highest resolution audio, photo, and video formats. If you are seeking big RAID performance that's small enough to fit on a desk, in a rack, or on a DIT cart, your wish is now a reality.


A New World of Drive Use Flexibility
With four drive bays, you can mix or match different brand and capacity 2.5-inch SSDs and HDDs. Use mixed drives independently or combine drives as a RAID with the included SoftRAID setup and management software. You can populate this empty enclosure with your own drives, or choose a pre-configured capacity solution to achieve your desired balance of storage, performance, and data redundancy.

Expand production capabilities in industry-leading creative platforms like Final Cut X, Avid Pro Tools, Apple Pro Logic, and Adobe Lightroom, edit large images, manage massive photo and audio libraries, store drone videos, use it as a transport drive…whatever the day or project demands, the ThunderBay 4 mini is the perfect workflow solution.


Install or Swap in Minutes
Want to access a drive or expand your storage capacity? Simply open the front panel security lock to access the four individual bays. Drives mount to a tray that slides back in and automatically plugs into a drive connector so you can get back to work in minutes.


Store More, Go Faster
With the ability to daisy-chain you can add up to five additional ThunderBay 4 mini solutions to create massive storage capacities. Merge them with SoftRAID for even more flexibility, capacity, and capability. Or if speed is what you’re after, connect multiple ThunderBay 4 mini solutions to multiple Thunderbolt 3 ports on your Mac or PC to achieve exponential speed capabilities.


Includes SoftRAID: Easy and Complete Drive Management
Now you can quickly access and robustly protect your data with SoftRAID XT. SoftRAID easy setup makes it a breeze to create RAID volumes by helping you through the entire process. With multiple RAID options, you decide what you’re using your RAID volume for and how much space to allocate to it. It's that simple to create your preference of speed and/or redundancy for your data volume.


SoftRAID Highlights
• Up to 86% faster versus AppleRAID
• Create advanced RAID 0, 1, 4, 5, 1+0 (10) volumes for higher performance and/or redundancy.
• Enterprise-class monitoring for drive and RAID volume health with email notifications
• Volume validation to ensure sectors can be read, parity is correct, and minimization of volume failure
• Drive certification checks that your drives are safe to store data before use
• Drive failure prediction with early warning helps protect you from sudden drive failure


Professional Grade = Ready to Work
We understand having confidence in gear reliability is paramount to creative professionals. That’s why every ThunderBay 4 mini enclosure undergoes a multi-step performance certification prior to shipping. This ensures your ThunderBay 4 mini enclosure arrives ready for demanding use.


Support You Can Trust
Like all OWC products, the ThunderBay 4 mini enclosure is fully backed by OWC's award-winning U.S.-based support team and a 1 Year OWC Limited Warranty.
Speed, size, and convenience — the OWC ThunderBay 4 mini provides everything a demanding workflow requires.


Product Specifications:
OWC Part Number 
Mac OS Compatibility 
Mac OS X 10.13 and later
PC OS Compatibility 
Windows 10 and later
Other Requirements 
Thunderbolt 3 Port
(2) Thunderbolt 3 Ports
Number of Bays 
(4) 2.5" SATA
Housing Color 
Housing Material 
Security Slot 
Cooling Fan 
(1) 60mm cooling fan
Thunderbolt: Intel JHL6540
SATA Controller: ASMedia ASM-1062
Data Transfer Rate (Max) 
Thunderbolt 3 : 40 Gb/s (or 5000 MB/s
Independent volumes bootable in macOS
Power Supply 
External UL-listed universal auto-switching power supply
AC Input 
100-240V, 50-60Hz, 2.0A
DC Output 
+12V, 6A
Environmental (Operating)
Temperature 41°F to 95°F (5°C to 35°C)
Altitude -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
Shock Varies depending on drive mechanism installed
Environmental (Non-Operating)
Temperature -4°F to 140°F (-20°C to 60°C)
Altitude -304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)
Shock Varies depending on drive mechanism installed
Height: 11.7 cm (4.6 in)
Width: 9.6 cm (3.8 in)
Length: 19.1 cm (7.5 in)
1.1 kg (2.51 lbs)
Varies depending on drive mechanism installed



Other World Computing (OWC), founded in 1988, is an American computer hardware and software company, with an online store for upgrading Mac, Windows and accessories.

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