Product highlights:
- Converter lets you connect older TB2 and TB1 peripherals
- Compatible with TB3 certified laptops like Lenovo, Dell, etc
- Enables use of older Thunderbolt monitors
- Bus-powered; provides up to 12W of power for peripherals
- 7.9 inch attached cable
- Adapter is not reversible
StarTech Thunderbolt 3 to Thunderbolt Adapter
With this adapter, you can connect Windows and Mac based Thunderbolt 3 computers to older Thunderbolt devices, such as external hard drives, Thunderbolt displays, and older Thunderbolt capable Mac computers. Because this adapter is backward compatible, you can connect to first-generation Thunderbolt devices at 10Gbps speed. With Thunderbolt 2 devices, you can connect at 20Gbps. The adapter satisfies all requirements for bi-directional data transfers and simultaneous power for bus-powered devices.
Ratings and reviews
StarTech Thunderbolt 3 to Thunderbolt Adapter 

StarTech Thunderbolt 3 to Thunderbolt Adapter
SKU: TBT3TBTADAP