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OWC Drive Dock U.2

Support Manual

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1.1 System Requirements

Operating System

  • Mac: macOS 10.12.6 or later
  • PC: Windows 10 or later
  • Other: Linux, iPadOS 15.3 or later, Android OS (latest version recommended), ChromeOS (latest version recommended)


  • Works with any Mac, PC, iPad, Chromebook, tablet, or phone with a USB or Thunderbolt (USB-C) port

Supported Drives

  • 3.5”/ 2.5” SATA HDDs/SSD
  • 3.5”/ 2.5” NVMe U.2 SSDs/adapters
    • OWC U2 ShuttleOne sold separately:

1.2 Package Contents

  • OWC Drive Dock
  • USB 3.2 Gen 2 Type-C cable
  • USB 3.2 Gen 1 Type-C to Type-A cable
  • AC power cable

1.3 About this Manual

The images and descriptions may vary slightly between this manual and the unit shipped. Functions and features may change depending on the firmware version. The latest product details and warranty information can be found on the product web page. OWC’s Limited Warranty is not transferable and subject to limitations.

General Use Precautions

To avoid damage, do not expose the device to temperatures outside the following ranges:

Environmental (Operating)

  • Temperature (°F): 32° to 104°
  • Temperature (°C): 0° to 40°

Environmental (Non-Operating)

  • Temperature (°F): -4° to 158°
  • Temperature (°C): -20° to 70°

Always unplug the device from the electrical outlet if there is a risk of lightning or if it will be unused for an extended period of time. Otherwise, there is an increased risk of electrical shock, short-circuiting or fire.

Do not use the product near electrical appliances such as televisions, radios or speakers. Doing so may cause interference which can adversely affect the operation of the appliances.

Do not place the device near sources of magnetic interference, such as computer displays or speakers. Magnetic interference can affect the operation and stability of hard drives.

Do not place objects on top of the device.

Protect your device from excessive exposure to dust during use or storage. Dust can build up inside the device, increasing the risk of damage or malfunction.

Do not block any ventilation openings on the device. These help to keep the device cool during operation. Blocking the ventilation openings may cause damage to the device and cause an increased risk of short circuiting or fire.

Safety Precautions

  • Read this user guide carefully and follow the recommended steps for assembly.
  • Use proper anti-static precautions while installing drives into this enclosure. Failure to do so can cause damage to your drive mechanisms and/or the enclosure.
  • Do not attempt to disassemble or modify the device. To avoid any risk of electrical shock, fire, short-circuiting or dangerous emissions, never insert any metallic object into the device. If it appears to be malfunctioning, please contact technical support.
  • Never expose your device to rain, or use it near water or in damp or wet conditions. Never place objects containing liquids on the drive, as they may spill into its openings. Doing so increases the risk of electrical shock, short-circuiting, fire or personal injury.

1.4 Top View

A. SATA or U.2 Drive Bay 1

B. SATA or U.2 Drive Bay 2

C. Drive Bay 1 Power Button

D. Drive Bay 2 Power Button

E. Drive Bay 1 Power / Activity LED

F. Drive Bay 2 Power / Activity LED

1.5 Back View

A. AC IN Power Port

B. Power Switch

C. USB 3.2 Gen 2 (10Gb/s) Type-C Port

Getting Started

2.1 Device Setup

  1. Plug the power cable into the Drive Dock and into a power outlet.
  2. Plug in the USB cable into the OWC Drive Dock and into a system.
  3. Insert 2.5-inch or 3.5-inch SATA drives or U.2 drives into one or both drive bays.
  4. Turn on the OWC Drive Dock by pressing the power switch, located on the back, to the on position. The line symbol means “power on” while the circle symbol mean “power off”.
  5. Power on a drive by pressing and releasing the corresponding drive power button located on the top.
    1. Pressing power button 1 will activate bay 1 on the dock.
    2. Pressing power button 2 will activate bay 2 on the dock.

Device Management

3.1 Unmounting Drives

To ensure no data is lost during normal use, always eject or unmount the corresponding disk(s) from your operating system before powering off the device. Unmounting options are provided below.

OWC Dock Ejector

This application safely ejects all drives connected to the OWC Gemini with a single click, adding peace of mind to fast-paced mobile workflows. To install this app, please follow the steps below.

  1. Download the installer file for Mac or Windows:
  2. Launch the installer and follow the prompts. No restart is required.
  3. Once the app is running an icon like the one shown below will appear in the macOS menubar, or, System Tray on Windows. Clicking on the icon will provide options to unmount the OWC Gemini.
  4. Full user manual can be viewed by visiting

Manually Unmounting Drives


  1. Drag the icon for the disk you wish to unmount to the trash can; OR
  2. Right-click the disk icon on the desktop, then click “Eject”; OR
  3. Highlight the disk on your Desktop and press Command-E.


  1. Go to the System Tray (located in the lower right corner of your screen). Click on the “Eject” icon (a small green arrow over a hardware image).
  2. A message will appear, detailing the devices that the “Eject” icon controls, i.e., “Safely remove...” Click on this prompt.
  3. You will then see a message that says, “Safe to Remove Hardware.” It is now safe to disconnect the Mercury Elite Pro Dock from the computer.
    1. The steps above are applicable to Windows 10 build 1803 and earlier. If you are using Windows 10 build 1809 (October 2018) or later, you can eject the drive by clicking the ‘Show hidden items’ menu in the Taskbar, then clicking ‘Safely Remove Hardware and Eject Media’, and last select the ‘Eject’ option for this volume.

3.2 Drive Removal and Powering Off Device

  • Power off a drive by pressing and holding the corresponding drive power button for three seconds. Release the power button after holding for three seconds.
  • Remove the powered off drive from the OWC Drive Dock after use. NOTE: If using a platter drive, ensure the drive has had a moment to rest after unmounting and power off. The platter may spin for a moment after use and removal of the drive while the platters are spinning may cause damage or data loss.
  • After drive usage is complete the OWC Drive Dock can be turned off by pressing the power switch to the off position. NOTE: When you use the power switch on the back of the Drive Dock to shut off power, the next time you switch the power on, neither drive bay will receive power. You will need to press the numbered power button(s) for the drive(s) you want to use during that session.

3.3 Usage Notes

  • RAID configurations are not recommended.
  • The OWC U2 Shuttle is not compatible with the OWC Drive Dock.
  • NVMe M.2 SSD use requires a M.2 to U.2 adapter such as the OWC U2 ShuttleOne (sold separately). The U2 ShuttleOne can be acquired by visiting
  • The two drives bays operate completely independent of one another. Users can unmount, power off, and remove one drive without affecting the other drive.
  • If there is no active data connection, the LEDs will not function.
    • The LEDs will show blue when there is an active data connection, the Drive Dock is powered on, but no drive activity is detected.
    • The LEDs will blink blue and pink when there is an active data connection, the Drive Dock is powered on, and drive activity is present.

Support Resources

4.1 Troubleshooting

  • Begin your troubleshooting by verifying that the power cable is connected to the OWC Drive Dock and to a power source. If the power cable is connected to a power strip, make sure that the power strip is switched on. Next, verify that both ends of the data cable are properly plugged into the system and the OWC Drive Dock. If you are still having trouble, try connecting a different type of data cable and see if the Drive Dock works properly. You can also connect the device to a different system.
  • If issues continue to occur, please know that OWC support is here to help. Contacting support information can be found in section 4.4. Please have your serial number ready which is located on the bottom of the OWC Drive Dock and printed on the original packaging. 

4.2 Online Resources

4.3 About Data Backup

To ensure that your files are protected and to prevent data loss, we strongly suggest that you keep two copies of your data: one copy on your OWC Gemini and a second copy on either your internal drive or another storage medium, such as an optical backup, or on another external storage unit. Any data loss or corruption while using the OWC Gemini is the sole responsibility of the user, and under no circumstances may OWC, its parents, partners, affiliates, officers, employees, or agents be held liable for loss of the use of data including compensation of any kind or recovery of the data.

4.4 Contacting Technical Support

Terms & Conditions of Sale


OWC’s products are provided subject to OWC’s Terms & Conditions of Sale located at Terms of Sale or other applicable terms. The OWC Drive Dock comes with a 2 Year Limited Warranty. Additional warranty information can be viewed by visiting Hardware Warranties.


The material in this document is for information purposes only and subject to change without notice. While reasonable efforts have been made in the preparation of this document to assure its accuracy, OWC, its parent, partners, affiliates, officers, employees, and agents assume no liability resulting from errors or omissions in this document, or from the use of the information contained herein. OWC reserves the right to make changes or revisions in the product design or the product manual without reservation and without obligation to notify any person of such revisions and changes.

FCC Statement

Warning! Modifications not authorized by the manufacturer may void the user’s authority to operate this device.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference with radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

Copyrights and Trademarks

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of OWC.

© 2022 Other World Computing, Inc. All rights reserved. OWC and the OWC logo are trademarks of New Concepts Development Corporation, registered in the U.S. and/or other countries. OWC Drive Dock is a trademark of New Concepts Development Corporation. Mac and macOS are trademarks of Apple Inc., registered in the U.S. and other countries. Thunderbolt and the Thunderbolt logo are trademarks of Intel Corporation in the U.S. and/or other countries. Other marks may be the trademark or registered trademark property of their owners.

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