1-800-275-4576
OWC ThunderBay 4 mini
Four-Bay Thunderbolt 2 (20Gb/s) External Storage Enclosure for 2.5-inch SATA Drives
Mfr P/N: TB4MJB000 OWC SKU: OWCTB4MJB000
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The Perfect Combination of Speed, Size, and Convenience for Permanent Access to Your Data
- Fast: up to 750MB/s HDD peak performance and 1346MB/s SSD peak performance (RAID 0)
- Expandable: daisy-chain up to five additional Thunderbolt devices
- Built for RAID: just add your own RAID management software, like OWC SoftRAID; the fastest and most flexible RAID 0/1/4/5/1+0 (10) tool. Also supports Apple RAID and Windows Disk Manager.
- Four hot-swappable 2.5-inch drive bays: mix or match 2.5-inch HDDs and SSDs
- Certified: Thunderbolt certified for Mac and Windows
- 1 Year OWC Limited Warranty
Ships: Pending
Big RAID System Performance in a Compact Design
A New World of Drive Use Flexibility
Install or Swap in Minutes
Store More, Go Faster
More Powerful With SoftRAID
Try SoftRAID COMPLETELY FREE for 14 Days
Thunderbolt Made Easy
Professional Grade = Ready to Work
Support You Can Trust
- When connected to a Thunderbolt (10Gb/s) host, data transfer will be limited to 10Gb/s.
- Advanced RAID features require RAID management software (such as OWC SoftRAID, available separately).
Includes
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- (1) OWC ThunderBay 4 mini External Storage Enclosure
- (1) 1.0M (39") Thunderbolt 2 Cable
- (1) External Power Supply
- (1) US Power Cable
- (2) Security Keys for Front Panel Lock
- (1) Quick Start Guide for OWC ThunderBay 4 mini with Thunderbolt 2
- (1) Assembly Manual & User Guide for OWC ThunderBay 4 mini with Thunderbolt 2
- 1 Year OWC Limited Warranty
Specs
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Drive Bays
- 4 bays supporting: 2.5-inch SATA HDDs, 2.5-inch SATA SSDs
Hot Swap Support
- Yes
Hot Plug Support
- Yes
Boot Support
- Independent volumes bootable in macOS. Boot Camp is not supported.
Storage Interface
- SATA
RAID Capable
- Yes
RAID Levels Supported
- JBOD
RAID Features
- Software RAID Capable
Device Ports
- (1) Host Port - Thunderbolt 2 up to 20Gb/s (2500MB/s) - Thunderbolt 1 backwards compatible
- (1) Thunderbolt 2 Port
Data Transfer Rate (Maximum)
- Thunderbolt 2 : Up to 20Gb/s (or 2500MB/s)
- Thunderbolt : Up to 10Gb/s (or (1250MB/s)
Chipset / Controller
- Thunderbolt 2: Intel JHL5520
- SATA Controller: ASMedia ASM-1062
Host Interface Requirements
- Thunderbolt 2 (mDP) port (backwards compatible with Thunderbolt1)
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
- macOS 13.x Ventura
- macOS 14.x Sonoma
- macOS 15.x Sequoia
PC OS Compatibility
- 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
- Windows Server 2019
- Windows Server 2022
- Windows 11
Driver Required
- SoftRAID Only
Other Requirements
- Requires macOS 10.12.6 or later.
- Will work with Thunderbolt (10Gb/s) Mac models, but data transfer will be limited to 10Gb/s.
External Power Adapter
- Yes
Power Supply
- External UL-listed universal auto-switching power supply
AC Input
- 100-240V, 50-60Hz, 2.0A
DC Output
- +12V, 6A
Wattage
- 72W
Cooling
- (1) 60mm cooling fan
Security Slot
- Yes
Power/Activity LED
- Yes
Housing Color
- Black
Housing Material
- Aluminum
Dimensions
- Height: 11.7 cm (4.6 in)
- Length: 19.1 cm (7.5 in)
- Width: 9.6 cm (3.8 in)
Weight
- 1.1 kg (2.51 lbs)
Certifications
- CE
- FCC
- VCCI
- RCM
- BSMI
Reach Certification
- Yes
Ambient Temperature
- Operating: 41°F to 95°F (5°C to 35°C)
- Non-Operating: -4°F to 140°F (-20°C to 60°C)
Altitude
- Operating: -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
- Non-Operating: -304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)
Humidity
- Operating: 8% to 90% non-condensing
- Non-Operating: 5% to 95% non-condensing
Shock
- Operating: Varies depending on drive mechanism installed
- Non-Operating: Varies depending on drive mechanism installed
Noise
- Varies depending on drive mechanism installed
- When connected to a Thunderbolt (10Gb/s) host, data transfer will be limited to 10Gb/s.
Compatibility & Installation Videos
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MacBook Pro
MacBook Air
Mac Pro
Mac mini
Videos
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Hard Drive / SSD Install Video
Learn More
Customer Reviews
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Excellent external drive enclosure with room for 4 HDDs or SSDs and the Thunderbolt 2 connection for faster transfer speeds and a very quiet fan! It was the perfect addition to my Late 2015 iMac to speed up the system/data access and enhance my Time Machine backups for speed, reliability and redundancy. Product quality, fit and finish is first class and the "Mini" size is space-saving on my desk. Extremely easy to setup and use.
I would recommend this product to a friend!
Verified Purchase.- Reviewer:Reviewer1745068184
Thank you so much for your fantastic review! We're thrilled to hear that the OWC ThunderBay 4 Mini with TB2 has been the perfect addition to your Late 2015 iMac! It's awesome to know that you're enjoying the faster transfer speeds, quiet fan, and enhanced reliability for your Time Machine backups. We take great pride in our product quality, and it’s great to see that the design and ease of use have made a positive impact on your workspace. Your satisfaction means the world to us, and we can't wait to continue supporting you in the future!
This drive would not work for me because my Mac mini is too old to upgrade even though the website said it would. I spent two full days trying to make it work. I contacted OWC for an RMA and was given a massive runaround. I spent over an hour trying different things with the customer service representative trying to make it work with no success. I finally had to get angry and demand the RMA that I originally requested. After another half hour she finally relented and gave me the RMA. I gave this one star because of the misinformation on the website and the abysmally poor customer service. No purchase is worth two and a half days on the part of the customer. I will never do business with OWC again.
Verified Purchase.- Reviewer:kb7m
We’re very sorry to hear about your experience and truly regret the frustration it caused. This is certainly not the level of support we aim to provide, and we sincerely apologize that your interaction with our team didn’t reflect our commitment to helpful, responsive service. We appreciate you taking the time to share your feedback, and we will absolutely forward your comments to the appropriate teams for review. Your input helps us improve, and we take it seriously. If there's anything we can do to help clarify the compatibility issue or support you further, please don’t hesitate to reach out—we're here to help.
During September purchase of an OWC 14-Port Thunderbolt Dock, OWCTB3DK14PSG, to use with my MacBook M3 and a ThunderBay 4 Mini, OWCTB4MJB000, for long-term and safe storage my 300+ ripped DVD movie collection (among other things, backups etc…) My knowledge of Thunderbolt connectors and drive enclosures was very limited. So a considerable amount of time was spent on the OWC website researching both. What I did grasp, along with my budget and storage needs, led me to the ThunderBay 4 Mini. After looking at the photos and watching the video on its product page, I decided to purchase it. I’ve just recently procured the SATA SSD drives for the enclosure, installed them to begin transferring my DVD collection only to find that the Thunderbolt connectors and cable that came with my ThunderBay 4 Mini are not compatible with my new Thunderbolt 14 Dock or MacBook Pro. They certainly weren’t the connectors in the ThunderBay 4 Mini video I watched on its product page. I’m disappointed to learn the ports on my new ThunderBay 4 Mini are not the Thunderbolt C ports shown in the video but older technology Thunderbolt ports, known to me as Apple display ports. To use my new ThunderBay I’ll need to purchase two adapters, although the website is unclear so I’m not sure if I need the ones that are $47.88 each or $64.99 each. I purchased a new drive bay with old technology and now have to spend an additional $100 to $150 for adapters because the information on the OWC website is unclear. This was a bad purchase so I’m forced to look for a different enclosure and take the loss. I was accustomed to better from OWC.
Verified Purchase.- Reviewer:JerryGia
We sincerely apologize for the confusion and frustration you’ve experienced with your purchase. We completely understand how important compatibility is when setting up your storage solution, and we regret any misunderstanding regarding the ThunderBay 4 Mini model you selected. It looks like the order placed was for the Thunderbolt 2 version of the ThunderBay 4 Mini. We do offer both a Thunderbolt 2 and a Thunderbolt 3 version, and it’s possible that an honest mistake occurred when placing the order. The product details on our website specify the connection type, but we understand that Thunderbolt versions can be tricky, especially when ensuring compatibility across multiple devices. We truly appreciate your feedback and would be happy to assist in finding the right adapters or exploring alternative solutions that best fit your setup. Please feel free to reach out to our team so we can help you determine the most cost-effective way to get your storage up and running smoothly. Again, we’re sorry for the inconvenience and appreciate your continued trust in OWC. https://ca.macsales.com/Service/
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