Mac の Thunderbolt 4/Thunderbolt 3/USB-C ポート用のアダプタ - Apple サポート (日本)
Recommended for Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter by Apple - GTrusted
Apple Thunderbolt 2/Thunderbolt 3 Data Transfer Cable for Hard Drive, MacBook Pro - First End: 1 x USB Type C Male Thunderbolt 3 - Second End: 1 x Female Thunderbolt 2 - Hunt Office Ireland
Thunderbolt and the Mac: The adapters you need | Macworld