LaCie 1big Dock User Manual
LaCie 1big Dock User Manual

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The LaCie® 1big Dock is a Thunderbolt 3 storage hub that lets you ingest files directly through built-in CF and SD card slots, connect two 4K displays, daisy chain devices, and charge your laptop with up to 80W of power—all through a single cable. It features an advanced-cooling design and a swappable, enterprise-class drive for extended reliability.

This manual provides details on configuring and using your LaCie 1big Dock. For common questions and answers about 1big Dock, see Frequently Asked Questions. You can get support and updated technical information at LaCie customer support.

Box content

  • LaCie® 1big Dock
  • Thunderbolt 3 (40Gb/s) cable
  • External power supply
  • 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.

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.