LaCie 2big Dock Thunderbolt 3 User Manual
LaCie 2big Dock Thunderbolt 3 User Manual

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The LaCie 2big Dock delivers everything you expect from LaCie products—high capacity, lighting-fast speeds, and enterprise-class drives. Port by port, slot by slot, the LaCie 2big Dock is a powerful docking station that gives back to you everything that modern laptops took away. The result: a creative space that’s entirely streamlined.

This manual provides details on configuring and managing your LaCie 2big Dock Thunderbolt 3. For common questions and answers about your device, please see Frequently Asked Questions.

You can get the latest tips regarding your product and updated technical information at LaCie customer support.

Box content

  • LaCie 2big Dock Thunderbolt 3
  • External power supply
  • Thunderbolt 3 cable (compatible with Thunderbolt 3, USB 3.1 Gen 1, and USB 3.1 Gen 2 ports)
  • Quick Install Guide
  Important info: Save your packaging. In the event that the hard drive enclosure should need to be repaired or serviced, it must be returned in its original packaging.


RAID Management

LaCie RAID Manager manages the storage for your LaCie storage device and provides important firmware updates and notifications. Download and install LaCie RAID Manager before connecting the LaCie storage device to your computer. The process automatically installs an important driver that allows LaCie RAID Manager to detect the device and manage RAID arrays. For details and download links, go to


Mac users—Intego Backup Manager Pro is a comprehensive backup solution for macOS, protecting you from data loss by systematically making copies of your documents, applications, and system files. Click here for details and download links.

PC users—Genie Backup Manager Pro is the ideal backup solution for small and medium businesses that want to back up and recover their entire system. Click here for details and download links.

Minimum computer system requirements


Use the included cable to connect your LaCie device to a computer with a Thunderbolt or USB-C port.

Operating system

Go to Operating System Requirements for Seagate Hardware & Software.

Minimum free disk space

600MB recommended.