Massively expand your connectivity: Add More Thunderbolt™ Ports + Works with USB-C Machines Too!
Connectivity and Convenience
Massively expand the Thunderbolt functionality of your Apple M1 Mac, any Apple 'Intel' Mac with Thunderbolt 3, or any Thunderbolt 4 PC . You can also use the OWC Thunderbolt Dock with non-Thunderbolt USB-C machines like Chromebooks and iPads too. Gain convenient access to portable gear, headphones, and SD cards. Add your favorite Thunderbolt and USB devices, Gigabit Ethernet, and an SD card reader to your workflow... all while keeping your space free of cable clutter.
(1) Thunderbolt 4 (USB-C) with up to 96W computer power delivery
(3) Thunderbolt 4 (USB-C)
(3) USB 3 Type-A (10Gb/s)
(1) USB 2.0 Type-A with high-power charging (BC 1.2)
(1) SD card slot
(1) Combo audio in/out jack
(1) Gigabit Ethernet
The Past, Present, and Future is Yours
Three Thunderbolt ports and four USB ports empower you to connect to past, present and future devices. Up to two 4K displays or a 5K/6K/8K display, high-performance storage including NVMe SSDs, A/V mixers, phones, tablets, even desktop accessories like a keyboard or mouse. With the OWC Thunderbolt Dock, an entire world of USB and Thunderbolt accessories is ready for you to connect and expand your capabilities.
The Connect-it-all Solution
The latest Thunderbolt interface uses a universal USB-C connector to transfer data, output video, and charge devices through the same cable. The OWC Thunderbolt Dock’s Thunderbolt ports use that same USB-C connector to create a multi-connectivity solution for millions of existing and future Thunderbolt and USB-C computers and devices.
Reimagining the Daisy Chain
Daisy chains are perfect for connecting a lot of devices to a single port, but remove any device other than the last one and you're left with the hassle of disconnecting and reconnecting devices. The OWC Thunderbolt Dock lets you create three separate “tree branch” device chains, so you can remove devices from one chain without affecting or disconnecting the others. You can even add three Thunderbolt bus-powered devices.
Plug in Multiple Bus-Powered Thunderbolt Drives
In the past, daisy chaining external storage required you to place it close to the front of the chain to get fast, reliable performance. That wasn’t possible with bus-powered drives. They had to be placed last in the Thunderbolt chain… and the chain was limited to just one bus-powered device! Now, you can connect multiple portable SSDs directly to the OWC Thunderbolt Dock to experience the fastest speed your storage device can deliver!
Nothing can put you behind schedule like slow, low-quality Wi-Fi. Don’t settle for a sub-par connection. Plug your wired network into the OWC Thunderbolt Dock’s Gigabit Ethernet port for uninterrupted downloads, fast and reliable file transfers, secure network access, and increased productivity. The OWC Thunderbolt Dock’s IP-based connection facilitates collaboration on big team projects without worrying about your Wi-Fi connection.
SD Card Reader
Getting content to your computer is a necessity now that photo and video creation have become a part of daily life. Don’t waste time struggling with data transport. Transfer your creative files quickly, easily, and conveniently with the OWC Thunderbolt Dock’s SD card reader. You can also use the reader like an external drive to store or backup files at will with 312MB/s of speed at your fingertips.
A Higher Vision
The OWC Thunderbolt Dock’s Thunderbolt technology let you connect to a single 5K/6K/8K display or two 4K displays. Enjoy more precise and vivid details in graphic-intensive CAD drawings. Attend a video meeting on one screen while editing content on another screen. Up your Photoshop or Affinity Photo images up a notch. Edit large format video on one display, while previewing the raw playback on the other. Whatever your workstation display needs, the OWC Thunderbolt Dock gives you the vision to take it to the next level.
The OWC Thunderbolt Dock works with any Mac with an available Thunderbolt 3 port running macOS 11.1 Big Sur. Need a Thunderbolt dock that works with older versions of macOS? Check out our selection of award-winning Thunderbolt 3 docks.
The OWC Thunderbolt Dock works with any Windows PC with an available Thunderbolt 4 port. Need a dock for PC without Thunderbolt 4? Rest assured this connectivity wonder stands ready for duty as a USB-C dock. Check out all of our award-winning Thunderbolt and USB-C docks.
iPads and Chromebooks
The OWC Thunderbolt Dock also functions as a USB-C dock for expanding the device connectivity of USB-C equipped machines like iPads and Chromebooks. Now you can add USB devices like a keyboard, mouse, drive, and even a bigger display with a USB-C adapter (sold separately)
With 90 watts of charging power, you can do it all simultaneously: keep your notebook ready for mobile use, power/charge devices, and free up a Thunderbolt port on your machine. Ready to take a break or done for the day? The OWC Thunderbolt Dock will continue to power and/or charge connected computers and devices.
Disconnect in One Click
OWC Dock Ejector software safely disconnects multiple drives from the OWC Thunderbolt Dock in a single click. Designed by OWC hardware and software engineers, Dock Ejector ensures all data is written before disconnection, saving time and protecting against data loss. It makes losing your hard-earned work a thing of the past.
OWC’s free Dock Ejector app includes a special driver that enables your OWC Thunderbolt Dock to play and burn CDs and DVDs with the Apple SuperDrive. Just connect the SuperDrive to an open USB-A port on the OWC Thunderbolt Dock for bus power to watch a DVD movie, listen to music CDs, create a backup disk, and install software.
Secure Your Workflow with OWC ClingOn
Active workspaces expose gear to bumps, shoves, and the random tail wag from a pet. Just one ill-timed touch can cause an accidental cable disconnection interruption to your workflow. OWC ClingOn custom cable stabilizers (sold separately) screw into the OWC Thunderbolt Hub’s housing to secure your Thunderbolt (USB-C) connections so you can work with confidence even in the highest foot traffic environments.
Up to one 8K display @ 60Hz,
or one 5K display @ 60Hz,
or two 4K displays @ 60Hz,
or one 4K display @ 120Hz,
or one 4K display @ 60Hz
Display Support by Port
Thunderbolt 4: Up to 8K @ 60Hz or 4K @ 120Hz via a native Thunderbolt 4 display or other display that supports USB-C connections and DisplayPort 1.4
Up to 40Gb/s
Ethernet Speeds (RJ-45)
1Gb/s "Gigabit" (1000BASE-T)
Mac OS Compatibility
macOS 11.x Big Sur
macOS 12.x Monterey
PC OS Compatibility
Windows 10 64-bit Edition
Mobile OS Compatibility
Other OS Compatibility
Host Port Requirements
Works with any Apple silicon Mac or iPad with Thunderbolt (USB-C), Apple ‘Intel’ Mac with Thunderbolt 3, or any Thunderbolt 4 PC. Works as a USB-C dock on any USB-A (with USB-C to USB-A adapter or cable sold separately) or USB-C equipped MacBook, iPad, Chromebook, Android device, or PC. When used on a USB port, bandwidth is reduced, Thunderbolt devices are not supported, and additional functionality will vary depending upon the USB port. On a USB Type-A port, displays and power delivery are not supported. On a USB Type-C port, displays and power delivery functionality will depend upon the host USB Type-C port supporting those functions.
External UL-listed universal auto-switching power supply
100-240V, 50-60Hz, 2.5A
External Power Adapter
(4) Thunderbolt 4 (USB-C) Ports
(3) USB 3.2 Gen 2 Type-A Ports up to 10Gb/s (1250MB/s) - USB 2.0/3.0 backwards compatible
(1) USB 2.0 Port
(1) Gigabit Ethernet (GbE) RJ-45 Port
(1) 3.5mm Stereo Audio Input/Output Combo Port
Memory Card Slots
(1) Secure Digital (SD)
Chassis: Space Gray
Height: 2.6 cm (1.0 in)
Length: 19.8 cm (7.8 in)
Width: 7.3 cm (2.9 in)
400.0 g (0.88 lbs)
Operating: 32°F to 86°F (0°C to 30°C)
Non-Operating: -4°F to 140°F (-20°C to 60°C)
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)
Operating: 5% to 95% non-condensing
Non-Operating: 5% to 95% non-condensing
Actual display support varies upon computer specifications. Supported Intel-based Mac models and Thunderbolt 4 PCs support two displays over a Thunderbolt port. The following Apple M1 Mac models support a single display over a Thunderbolt port: - MacBook Pro (13-inch, M1, 2020) - MacBookPro17,1 - MacBook Air (M1, 2020) - MacBookAir10,1 - Mac mini (M1, 2020) - Macmini9,1
The following Mac models have DisplayPort 1.4, but offer only partial support for DisplayPort 1.4, limiting the resolution to (for example) 5K or 6K at 60Hz. Please review Apple's display specifications for your specific Mac to determine the maximum supported resolution and color depth.: - MacBook Pro (15-inch, 2018) - MacBookPro15,1 - MacBook Pro (13-inch, 2018, Four Thunderbolt 3 ports) - MacBookPro15,2 - MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports) - MacBookPro15,2 - MacBook Pro (15-inch, 2019) - MacBookPro15,1 and MacBookPro15,3 - MacBook Pro (13-inch, 2019, Two Thunderbolt 3 ports) - MacBookPro15,4 - MacBook Pro (16-inch, 2019) - MacBookPro16,1 and MacBookPro16,4 - MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports) - MacBookPro16,2 - MacBook Pro (13-inch, 2020, Two Thunderbolt 3 ports) - MacBookPro16,3 - MacBook Air (Retina, 13-inch, 2018) - MacBookAir8,1 - MacBook Air (Retina, 13-inch, 2019) - MacBookAir8,2 - MacBook Air (Retina, 13-inch, 2020) - MacBookAir9,1 - iMac (Retina 5K, 27-inch, 2019) - iMac19,1 - iMac (Retina 4K, 21.5-inch, 2019) - iMac19,2 - iMac (Retina 5K, 27-inch, 2020) - iMac20,1 and iMac20,2 - Mac mini (2018) - Macmini8,1 - Mac Pro (2019) - MacPro7,1 - Mac Pro (Rack, 2019) - MacPro7,1
Manufacturer provided specifications for OWC p/n OWCTB4DOCK
Number of Bays/Drives
3.5mm Audio Jack, Ethernet, Thunderbolt 4, USB 3.2, USB Type-A, USB-C
Australian Owned Business
Macfixit Australia is an Australian owned and operated business based in Melbourne, Victoria and we've been operating since 2005.
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1. We will give you a 30-day, money-back guarantee on all our products. This means you can test drive the product in the convenience of your home. This is of course in addition to the standard manufacturer replacement warranties.
If your order contains a faulty product or a product incorrectly sent, we will of course take back the product and refund your money or send you a replacement product.
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