StarTech.com Thunderbolt 3 to Thunderbolt Adapter

  • Use 1st and 2nd-generation Thunderbolt devices with Thunderbolt 3 computer
  • Bus powered
  • 20cm Thunderbolt cable included


The StarTech.com Thunderbolt 3 to Thunderbolt Adapter lets you connect older TB2 (20Gbps) and TB1 (10Gbps) peripherals to a TB3 host; connect TB1/TB2 devices like docks or external storage drive bays.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.

This adapter is not reversible and will not work to connect Thunderbolt 3 peripherals to older computers with TB1 or TB 2 ports.

Cable Jacket Material PVC – Polyvinyl Chloride
Cable Shield Material Aluminum-Mylar Foil with Braid
Connector Plating Nickel
Maximum Data Transfer Rate 10 Gbps (Thunderbolt 1)
20 Gbps (Thunderbolt 2)
Connector A 1 – Thunderbolt™ 3 USB-C (24-pin) (40Gbps) Male
Connector B 1 – Thunderbolt™ 2 (20 pin) Female
OS Compatibility Windows 8.1, 10
macOS 10.12 – 10.15
Note This adapter is compatible with Thunderbolt™ displays only. It will not work with Mini DisplayPort (mDP) or DisplayPort (DP) monitors.
This is an ‘Active’ adapter cable. Any host system that doesn’t provide the full 15W of bus power won’t work with this device. Consult the manufacturer of your host system to determine how much bus power your host system provides.
TBT3TBTADAP can pass 12W of power through the Thunderbolt 2 port
Cable Length 20 cm [7.9 in]
Color Black
Product Height 1.6 cm [0.6 in]
Product Length 28 cm [11 in]
Product Width 59 mm [2.3 in]
Weight of Product 58 g [2 oz]