OWC StudioStack Thunderbolt 5 Stackable Storage and Connectivity Expansion Enclosure

With OWC StudioStack, you can boost your Mac Studio, Mac mini, or other Apple Mac with the world's fastest and highest-capacity innovative hybrid storage. Now you can show your true power... with up to 64 times more storage capacity, real-world speeds of up to 6302 MB/s that match the latest Mac Studio models, and a six-port Thunderbolt/USB-A hub for additional connectivity. Show off all that increased power of the OWC StudioStack in a sleek, aircraft-grade aluminum enclosure that fits perfectly on top of or under your powerful Apple Mac computer.

Work at Internal Drive Speed

Edit 8K video, run AI models, and access files with up to 6302MB/s real-world performance that matches your Mac Studio's internal SSD2

Protect Your Work

Aircraft-grade aluminum construction safeguards your drives while dissipating heat to maintain consistent peak performance

Access Your Entire Library

Put all your projects, assets, and archives at your fingertips with up to 8TB of fast NVMe storage plus 24TB of high-capacity HDD space

Maintain Your Focus

Work distraction-free with a smart adaptive fan that activates only when needed

Connect It All

Three Thunderbolt 5 ports and three USB-A ports let you run multiple displays, drives, and devices simultaneously without swapping cables

Grows With You

Easily upgrade to higher-capacity drives when your needs change

Integrate Easily

Compatible with your Thunderbolt 5/4, USB4, or Thunderbolt 3 Mac or PC right out of the box

Ready To Run

Hit the ground running at top speed with the included Thunderbolt 5 80Gb/s cable

All Gain. No Lag Pain.

Powered by advanced Thunderbolt 5 technology, you can use StudioStack to keep pace with the latest Mac Studio computers’ internal storage speed:

• OWC StudioStack Up to 6302MB/s
• Mac Studio 2025 (M4 Max, 512GB) 4084MB/s
• Mac Studio 2025 (M4 Max, 1TB+) 6204MB/s
• Mac Studio 2025 (M3 Ultra) 6260MB/s

StudioStack doesn’t just bulk up the latest M4 and M3 Mac Studios. You’ll blow away any lags when you connect StudioStack to M2 and M1 Mac Studios and M1/M2 minis with Thunderbolt 4 and even older Mac minis with Thunderbolt 3:

StudioStack Connected to: 

• Thunderbolt 4 host Up to 3200MB/s
• Thunderbolt 3 host (Mac only) Up to 2800MB/s
• USB4 host Up to 3200MB/s

Muscle Memory Redefined

Designed to match the sleek physique of the Mac Studio, this mass gainer redefines how to crush storage, connectivity, and display needs by delivering supersized gains in every byte.

StudioStack is ideal for:

• Creative professionals with photo/video/CGI/audio workflows that can take advantage of a dual-drive hybrid storage solution:
• NVMe: Ultra-fast performance for seamless editing, compositing work, and cached 3D simulations.
• HDD: large storage for Lightroom libraries, media files, 3D assets, archival footage, inactive projects, and project/file backups.
• General users seeking to expand their Mac Studio storage and connectivity capabilities while matching the performance and design of their machine.
• AI engineers and data scientists needing fast storage and large capacity to store and run large LLMs with ease and greatly expand the non-upgradeable 512GB storage existing in their Mac Studio.
• Anyone wanting to add several Thunderbolt displays to a Mac Studio and expand the machine’s built-in storage.

Lift Beyond Your Limit

With StudioStack’s three Thunderbolt 5 and three USB-A ports, you’ll lift the connectivity limit of your Mac mini M1/M2 machine to a new PR. You’ll also love how easy and fast the two side-located USB-A ports make plugging in flash drives, card readers, and other frequently used devices instead of blindly fumbling around behind your machine.

Better Than Plug and Play…It’s Plug and Pump Up

OWC products are loved around the world over for their It Just Works™ ease-of-use and reliability. StudioStack solutions come pre-formatted (APFS/HFS+) so they're ready to plug into your Mac Studio or Mac mini and pump you up with power. Don’t fret if you’re a PC user, OWC’s free Drive Guide helps you easily reformat for Windows in seconds.

Your Data’s Reliability is Our #1 Priority

Like all OWC storage products, StudioStack underwent rigorous development testing processes, including intensive mandatory Thunderbolt certification. This hyper-focused attention to detail helps ensure you’ll enjoy a guaranteed consistent experience using StudioStack with a wide range of products and brands. As a final quality assurance, every StudioStack solution goes through a multi-step performance verification prior to shipping.

While the priority for some storage devices is to be a mass-produced, lowest price commodity, we do things differently because the reliability of your data and the longevity of an OWC product is priority #1.

Technical specifications

• Drive bays: 1 bay supporting: M.2 SSDs, single-sided and double-sided M.2 2280 drives “M Key” (NVMe SSDs with heat sinks do not fit and are not supported) and 1 bay supporting: 3.5-inch SATA hard drives, 3.5-inch SATA SSDs, 2.5-inch SATA hard drives, 2.5-inch SATA SSDs
• Hot-plug support: Yes
• Boot support: Yes. Boot Camp is not supported. Independent boot volumes in macOS
• RAID support: Yes
• Supported RAID levels: RAID 0, RAID 1
• Device ports: 1x Host port — Thunderbolt 5 (USB-C) with bidirectional data transfer speeds up to 80 Gbps and display bandwidth up to 120 Gbps, 3x Thunderbolt 5 (USB-C) ports, 3x USB 3.2 Gen 2 Type-A ports with speeds up to 10 Gb/s (1250 MB/s) — backward compatible with USB 2.0/3.0
• Power delivery: Thunderbolt 5 host port provides up to 60 W of power to the host computer.
• UASP support: USB Attached SCSI Protocol (UASP) is supported
• Display support: Up to two 8K displays at 120 Hz or three 4K displays at 144 Hz
• Display support by port: Thunderbolt 5 up to two 8K displays at 120Hz or three 4K displays at 144Hz via native Thunderbolt 5 display or other displays supporting USB-C and DisplayPort 2.1 connections
• Data transfer rate (maximum): Thunderbolt 5: up to 80 Gb/s, Thunderbolt 4 / USB4: up to 40 Gb/s
• Chipset/controller: Thunderbolt: Barlow Ridge JHL9480, USB: Fresco Logic FL5801 and Genesys GL3590
• Host interface requirements, Thunderbolt 5 port, Thunderbolt 4 port, Thunderbolt 3 port (Mac only), USB4 port
• Mac OS compatibility, macOS 14.x Sonoma, macOS 15.x Sequoia, macOS 26.x Tahoe
• PC OS compatibility, Windows 11
• Linux OS compatibility, Yes
• Mobile device OS compatibility: iPadOS 17, iPadOS 18, iPadOS 26
• Compatible with other operating systems: Chrome OS
• Driver required: No
• OWC ClingOn support: Yes
• External power supply: Yes, AC input 100–240 V, 50–60 Hz, 2.5 A, DC output ++20 V, 9 A, 180 W power
• Fans: 1x variable speed cooling fan regulated by temperature
• Security slot: Yes
• Power/activity LED: Yes, Power: white, Connection: blue, Hard drive: flashing green LED during activity, NVMe: flashing green LED during activity
• Case color: Silver
• Case material: Aluminum
• Dimensions: Height: 3.7 cm (1.5 inches), Length: 19.7 cm (7.8 inches), Width: 19.7 cm (7.8 inches)
• Weight: 800.0 g (1.76 pounds)
• Certifications: CE, FCC, RCM, VCCI, UKCA, ICES
• Reach certification: Yes