12.0TB OWC miniStack
Single Drive USB 3.2 (5Gb/s) External Storage Solution
Mfr P/N: MSTK3H7T12.0 OWC SKU: OWCMSTK3H7T12.0
$90.99 off - *NOW* Get Parallels Desktop Pro Edition - Windows/Multi OS Compatibility software for Mac - Only $29.00 with select OWC SSDs, HDDs, Memory, External Storage, and Optical Drives! (Limit 3 rebates, 1 rebate per qualifying item)
Must purchase with: Parallels Desktop Pro Edition for Mac - 1 Year License. SPECIAL PURCHASE
$4.00 off - Just in Case Special - Buy any OWC miniStack, and if you happen to need a USB-C to USB-A (USB 3) Adapter Cable, save an EXTRA 50% off the adapter!
Must purchase with: OWC USB-A to USB-C (USB 3) Adapter Cable (use USB-A devices on USB-C)
Highlights
- Fast transfer speeds up to 208MB/s
- USB 3.2 (5Gb/s) connectivity
- Compact, aluminum design with MagLev cooling fan
- Stacks perfectly with Mac mini (2010 - 2023) and Mac Studio
- 3 Year OWC Limited Warranty
Stackable Storage
Quick and Quiet
Reliability and Support You Can Count On
Ready to go. Right out of the box.
Includes
- (1) OWC miniStack External Storage Solution
- (1) 0.6M (24") USB 3.2 (5Gb/s) Type-B to Type-A Cable
- (1) External Power Supply
- (1) US Power Cable
- (1) Quick Start Guide
- (1) Assembly Manual & User Guide (Download only)
- 3 Year OWC Limited Warranty
Specs
Drive Bays
- 1 bay
Total Capacity
- 12.0TB
Total Solution Cache Size
- 512 MB
Drive Mechanism
- (1) 12.0TB Toshiba MG09ACA Series 7,200RPM Enterprise Capacity Hard Disk Drive with 512 MB cache
- *OWC reserves the right to replace or upgrade to equivalent or better components.
Plug and Play
- Yes
Drive Format
- HFS+ for Mac systems
- Windows and Android users please consult OWC Drive Setup for Windows, Chrome, and Android Platforms for formatting instructions
Rotational Speed
- 7,200RPM
Storage Interface
- SATA
Device Ports
- (1) USB 3.2 Gen 1 Type-B Port
Data Transfer Rate (Maximum)
- USB 3.2 Gen 1 : Up to 5Gb/s (or 625MB/s)
- USB 2.0 : Up to 480Mb/s (or 60MB/s)
- USB 1.1 : Up to 12Mb/s (or 1.5MB/s)
Chipset / Controller
- ASMedia ASM1153E
Mac OS Compatibility
- Mac OS X 10.6 Snow Leopard
- Mac OS X 10.7 Lion
- Mac OS X 10.8 Mountain Lion
- OS X 10.9 Mavericks
- OS X 10.10 Yosemite
- OS X 10.11 El Capitan
- 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
External Power Adapter
- Yes
Power Supply
- External universal auto-switching power supply
Cooling
- (1) MagLev cooling fan
Security Slot
- Yes
Power Button
- Yes
Power/Activity LED
- Yes
Housing Color
- Aluminum / Black
Housing Material
- Aluminum
Dimensions
- Height: 3.6 cm (1.4 in)
- Length: 19.7 cm (7.8 in)
- Width: 19.7 cm (7.8 in)
Weight
- 1570.0 g (3.46 lbs)
Ambient Temperature
- Operating: 41°F to 107.6°F (5°C to 42°C)
- Non-Operating: -40°F to 149°F (-40°C to 65°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: 65 G max at 2 ms
- Non-Operating: 175 G max at 2 ms
- USB 3.1 Gen 1 (5Gb/s) and USB 3.2 Gen 1 (5Gb/s) are the same USB standard identification. Please view our Knowledgebase article USB Cable Standard and Speed Chart for more details.
Benchmarks
Truth in Numbers: Another OWC Difference
There are many attributes that define “The OWC Difference.” By listing real-world performance tests of OWC solutions, we’re confident you’ll be completely satisfied with your technology investment.
macOS Test Results
Blackmagic Disk Speed Test
USB 3.1 Gen 1

AJA System Test
USB 3.1 Gen 1

Compatibility & Installation Videos
MacBook Pro

Requires USB Type-C to USB Type-A adapter

Requires USB Type-C to USB Type-A adapter

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MacBook Air

Requires USB Type-C to USB Type-A adapter

Requires USB Type-C to USB Type-A adapter

Requires USB Type-C to USB Type-A adapter

Requires USB Type-C to USB Type-A adapter

Requires USB Type-C to USB Type-A adapter

Requires USB Type-C to USB Type-A adapter

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MacBook

Requires USB Type-C to USB Type-A adapter

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PowerBook









Power Mac






Mac Pro













Mac Studio



Mac mini

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PC Compatible

Videos
Hard Drive Install Video
Customer Reviews
I did in the title. Ok then here are my 25 characters. Apparently your system can not count.
I would recommend this product to a friend!
- Reviewer:BrightRaven-23315
Thank you so much for your fantastic 5-star review! We're thrilled to hear that your installation experience was smooth and that the drive is working quietly—just the way we like it! We truly appreciate your feedback and are always here to help if you have any questions or need assistance in the future. Enjoy your upgraded setup! Please feel free to contact us if you have any further questions, comments, or concerns. https://eshop.macsales.com/Service/
This is the second 16 TB drive I have ordered and it is a great product! Unfortunately, this order was missing the proper DC (APD-US) power adapter (the small piece that snaps onto the wall adapter to convert it for use in North America). After communicating with Tony in OWC customer service the part was overnight shipped by UPS. Yes I am impressed with the stellar customer service to rectify getting me the missing part. OWC understands what it takes to respond when a customer has a problem with an order
I would recommend this product to a friend!
- Reviewer:Reviewer2583366701_Paul
Thank you so much for your fantastic review! We're thrilled to hear that you're a repeat customer, loving your OWC miniStack 16TB drives. It's great to know that Tony was able to assist you promptly and that we could get that missing power adapter to you quickly. Your satisfaction is our priority, and it’s wonderful to hear that our customer service team made a positive impact on your experience. We appreciate your trust in us and look forward to serving you again soon! Please feel free to contact us if you have any further questions, comments, or concerns. https://eshop.macsales.com/Service/
Matches well with my Mac Mini and gives me plenty of space for storage. I have yet to be disappointed in any product I’ve purchased from Other World Computing.
I would recommend this product to a friend!
- Reviewer:GracefulCobra-1282
Wow, thank you for the fantastic review! We're thrilled to hear that our hard drive is a perfect match for your Mac Mini and is providing you with ample storage! It's amazing to know that you've consistently been satisfied with our products at Other World Computing. Your feedback means the world to us, and we can't wait to continue serving you in the future!