StarTech.com Thunderbolt 3 to Thunderbolt 2 Adapter (Non-Reversible) - TB3 Laptop to TB2 (20Gbps) or TB1 (10Gbps) Devices / Displays - Black - Windows/Mac (TBT3TBTADAP): Amazon.co.uk: Computers & Accessories
Will there be a Thunderbolt 2 to USB-C adapter? - Quora
Cablecc 40Gbps USB-C Compatible with Thunderbolt 3 Port to Compatible with Thunderbolt 2 Adapter for 2016 Pro Display MC914 Hard Disk: Amazon.co.uk: Computers & Accessories