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Home/All Brands/OWC/OWC ThunderBay 4 mini Four-Bay Thunderbolt 2 External Drive Enclosure
OWC ThunderBay 4 mini Four-Bay Thunderbolt 2 External Drive Enclosure
OWC ThunderBay 4 mini Four-Bay Thunderbolt 2 External Drive Enclosure
OWC ThunderBay 4 mini Four-Bay Thunderbolt 2 External Drive Enclosure
OWC ThunderBay 4 mini Four-Bay Thunderbolt 2 External Drive Enclosure

OWC ThunderBay 4 mini Four-Bay Thunderbolt 2 External Drive Enclosure

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Product Information


OWC ThunderBay 4 mini Four-Bay Thunderbolt 2 External Drive Enclosure

The ThunderBay 4 mini SSD equipped solution is big on performance and flexibility yet sized about the length of a pencil. The rugged heat-dissipating aluminium enclosure features two Thunderbolt 2 (Thunderbolt 10Gb/s backward compatible) ports for up to 1346MB/s real-world 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 Flexibility

With four hard drive populated bays, you can use the drives independently or combine drives as a RAID with the included SoftRAID setup and management software. The ThunderBay 4 mini is also perfect for repurposing or maximising bare 2.5-inch HDDs and SSDs you already own.

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 another 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.

Professional Grade = Ready to Work

We understand having confidence in gear reliability is paramount to creative professionals. That’s why every ThunderBay 4 mini SSD solution a multi-step performance certification prior to shipping. This ensures your ThunderBay 4 mini arrives operating properly and immediately ready for demanding use.

  • Four 2.5-inch drive bays
  • Up to 1346 MB/s with (2) Thunderbolt 2 ports (Thunderbolt 2/Thunderbolt backward compatible)
  • Daisy-chain up to five additional Thunderbolt devices
  • Includes SoftRAID: robust software for creating, monitoring, and managing advanced RAID sets
  • Thunderbolt certified for Mac and Windows


Mechanisms Supported
  • Four (4) 2.5-inch SATA drives
  • Independent volumes bootable in macOS
Hot Swap Support
  • Yes
  • Thunderbolt 2: Intel JHL5520
  • SATA Controller: ASMedia ASM-1062
Drive Interface
  • SATA
Data Transfer Rate (Maximum)
  • Thunderbolt 2: 20 Gb/s (or 2500 MB/s)
  • Thunderbolt: 10 Gb/s (or (1250 MB/s)
RAID Capable
  • Yes
RAID Levels Supported
  • RAID 0, RAID 1, JBOD
RAID Features
  • Software RAID
Mac OS Compatibility
  • macOS 10.12 Sierra
  • macOS 10.13 High Sierra
  • macOS 10.14 Mojave
  • macOS 10.15 Catalina
  • macOS 11.x Big Sur
  • macOS 12.x Monterey
PC OS Compatability
  • Windows 7 32-bit edition
  • Windows 7 64-bit edition
  • Windows 8 32-bit edition
  • Windows 8 64-bit edition
  • Windows 8.1 32-bit edition
  • Windows 8.1 64-bit edition
  • Windows 10 32-bit edition
  • Windows 10 64-bit edition
Host Port Requirements
  • Thunderbolt 2 port
Driver Required
  • SoftRAID only
Power Supply
  • External UL-listed universal auto-switching power supply
AC Input
  • 100-240V, 50-60Hz, 2.0A
DC Output
  • +12V, 6A
  • 72 Watts
External Power Adapter
  • Yes
Number of Bays
  • 4
Device Ports
  • 2 x Thunderbolt 2 ports
Housing Material
  • Aluminium
  • H: 117 x L: 191 W: 96 mm
  • 1100 g

What's in the box

  • 1 x ThunderBay 4 mini
  • 1 x Thunderbolt 2 cable
  • 1 x External power supply
  • 2 x Keys for front panel lock
  • 1 x Quick start guide

Manufacturer Information

Part Number



  • 1 Year Limited Warranty

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