The Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter lets you connect Thunderbolt and Thunderbolt 2 devices — such as external hard drives and Thunderbolt docks — to any of the Thunderbolt 3 (USB-C) ...

and you’ll have to buy a $15 USB-C adapter cable to support a second. That’s cheaper than the alternative. The Kensington SD578OT is a solid Thunderbolt 4 dock in all respects. For those who ...