By default, many Seagate drives are pre-formatted as (for Windows) or exFAT (for cross-compatibility).

The Digital Archaeologist’s Guide: Taming the Data Beast with a Seagate External Drive

Pro tip: Install Toolkit, turn off the cloud nag notifications, and use only the “Sync” feature. This turns your drive into a paranoid guardian—every time you save a document to your desktop, the Seagate silently whispers a copy onto itself.

: Plug the USB cable into the drive and your computer.