Plug the drive into a free Thunderbolt 3 port on your Mac / PC or Thunderbolt 3 docking station. Mac systems will automatically mount the drive with no additional setup needed.
On Windows systems, you may need to authenticate Thunderbolt 3 devices before first use. Device authentication is somewhat intuitive, but a step-by-step guide can be found here:
Please note: When using Windows 10 (version 1809 and up) users must enable write caching in the Device Manager for maximum write speeds.