StarTech.com Thunderbolt 3 to Thunderbolt 2 Adapter
$80
StarTech.com Thunderbolt 3 to Thunderbolt 2 Adapter - TB3 Laptop to TB2 Displays & Devices - Thunderbolt 2 20Gbps or Thunderbolt 1 10Gbps Converter - Thunderbolt 3 Certified- Windows/Mac. Connector 1: Female, Connector 2: Male, Cable length: 0.2 m, Connector contacts plating: Nickel. Product colour: Black
Checked, set up and delivered in Perth by Tony's Tech Support. Call or text Tony on +61 480 079 649.