Amazon.co.jp: pc Adapter、USB-C To Mini Display Port Adapter USB 3.1 Type C(Thunderbolt 3)To Thunderbolt 2 Adapter For Mac Book Pro(white) : パソコン・周辺機器
Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter - SmarThingx
StarTech.com TBT3TBTADAP Thunderbolt 3 to Thunderbolt 2 Adapter - Backward Compatible - USB C to Mini DisplayPort - USB-C to Thunderbolt 2 Thunderbolt Cables & Adapters - Newegg.com
Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter