StarTech.com

Thunderbolt 3 to Thunderbolt Adapter - Windows Only

Use first-generation Thunderbolt and Thunderbolt 2 devices with your new Thunderbolt 3 computer

Product ID: TBT3TBTADAP

  • Cost-effective solution for connecting older Thunderbolt peripherals to newer Thunderbolt 3 laptops or computers
  • Compatible with first-generation Thunderbolt and Thunderbolt 2 devices
  • Thunderbolt Certified
  • Supplies power for bus-powered devices
112,99 € EUR exc VAT
112,99 € EUR inc VAT
Not Available
May be in stock with partners
Where To Buy

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Overview

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.

A Thunderbolt 3 laptop connected to a Thunderbolt 2 drive enclosure, using the TBT3TBTADAP adapter

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.

Thunderbolt 3 Logo

The TBT3TBTADAP is backed by a 2-year warranty for guaranteed reliability.

Learn more about Thunderbolt

Your computer’s Thunderbolt 3 ports might not function properly until you update one or more of the following on your computer:

  • BIOS
  • Thunderbolt firmware
  • Thunderbolt 3 controller drivers
  • Thunderbolt 3 software

The required updates will vary depending on your computer.

For an up-to-date list of affected computers and instructions, visit http://thunderbolttechnology.net/updates. If your manufacturer isn’t listed on the Thunderbolt website, contact your manufacturer.

Applications

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

Technical Specifications

Warranty Information
Warranty 2 Years
Hardware
Cable Jacket Type PVC - Polyvinyl Chloride
Cable Shield Type Aluminum-Mylar Foil with Braid
Connector Plating Nickel
Performance
Maximum Data Transfer Rate 10 Gbps (Thunderbolt 1)
20 Gbps (Thunderbolt 2)
Connector(s)
Connector A 1 - Thunderbolt™ 3 USB-C (24-pin) Male
Connector B 1 - Thunderbolt™ 2 (20 pin) Female
Software
OS Compatibility Windows 8.1, 10
macOS 10.12 - 10.13
Special Notes / Requirements
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
Physical Characteristics
Cable Length 20 cm [7.9 in]
Color Black
Product Height 16 mm [0.6 in]
Product Length 280 mm [11 in]
Product Weight 64 g [2.3 oz]
Product Width 59 mm [2.3 in]
Packaging Information
Shipping (Package) Weight 86 g [3 oz]
What's in the Box
Included in Package 1 - Thunderbolt™ 3 to Thunderbolt Adapter

Compatibility

View full OS compatibility
Windows 8.1, 10
macOS 10.12 - 10.13

Certifications

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Product Support

Drivers & Downloads

Data Sheet(s)
Support Material(s):
  • Thunderbolt 3_insert_rev2.pdf

    IMPORTANT
    Your computer’s Thunderbolt 3 ports might not function properly until you update one or more of the following on your computer:

    • - BIOS
    • - Thunderbolt firmware
    • - Thunderbolt 3 controller drivers
    • - Thunderbolt 3 software

    The required updates will vary depending on your computer.

    For an up-to-date-list of affected computers and instructions, visit https://thunderbolttechnology.net/updates. If your manufacturer isn’t listed on the Thunderbolt website, contact your manufacturer.

Frequently Asked Questions

Before You Buy

Components

Thunderbolt™ 3 is the latest version of the Thunderbolt standard for connecting computers and electronic devices. It is capable of the following:

  • Total bandwidth up to 40Gbps. Data transfer speeds are dependent on the other features that you are using in your setup.
  • USB 3.1 Gen 2 support.
  • 4K 60Hz video on one or two separate displays.
  • 5K 60Hz video on a single display.
  • A 10 GbE network connection between two Thunderbolt 3 compatible computers.
  • Up to six devices daisy-chained from a single Thunderbolt 3 port.
  • Alternate modes, such as DisplayPort Alternate Mode (DP Alt Mode).
  • Bi-directional power delivery up to 100W (not all Thunderbolt 3 devices support power delivery).

USB-C and Thunderbolt 3

Thunderbolt 3 uses the USB-C connector, but not all host connections, cables, and devices with a USB-C connector support Thunderbolt 3. This means that a USB-C device is compatible with a Thunderbolt 3 host connection, but a Thunderbolt 3 device is not compatible with a USB-C host connection. Therefore, it is important to know whether you have a USB-C or a Thunderbolt 3 host, cable, or device.

To determine if your component is a Thunderbolt 3 device, look for the Thunderbolt 3 symbol (shown below). USB-C devices do not include this symbol.  For more information about USB-C, see the following FAQ: https://www.startech.com/faq/usb-c-port-capabilites.

Thunderbolt symbol: https://sgcdn.startech.com/005329/media/products/gallery_large/TBLT3MMXM.B.jpg.

Backwards compatibility

If you use an adapter, Thunderbolt 3 host connections are compatible with Thunderbolt 1 and Thunderbolt 2 devices. You can use the StarTech.com TBT3TBTADAP to make a Thunderbolt 3 host connections backwards compatible.

Thunderbolt 3 devices are not backwards compatible with Thunderbolt 1 and Thunderbolt 2 host connections.

Although the Thunderbolt™ 3 standard is capable of data transfer speeds up to 40Gbps, not every cable can support this bandwidth. For example, cables over a certain length or made with certain materials are only capable of data transfer speeds up to 20Gbps. 

To confirm the capability of your Thunderbolt 3 cable, refer to the information provided by the manufacturer. StarTech.com lists the capabilities of the Thunderbolt 3 cables on the individual product pages.

There are two different Thunderbolt 3 cable symbols: the 20Gbps symbol and the 40Gbps symbol. The 20Gbps symbol is composed of the Thunderbolt 3 symbol, and the 40Gbps symbol is composed of the Thunderbolt 3 symbol and the number three. These images are shown below.

Thunderbolt 3 uses the USB-C connector, but not all host connections, cables, and devices with a USB-C connector support Thunderbolt 3. This means that a USB-C device is compatible with a Thunderbolt 3 host connection, but a Thunderbolt 3 device is not compatible with a USB-C host connection. Therefore, it is important to know whether you have a USB-C or a Thunderbolt 3 host, cable, or device.

To determine if your component is a Thunderbolt 3 device, look for the Thunderbolt 3 symbol (shown below). USB-C devices do not include this symbol.  For more information about USB-C, see the following FAQ: http://www.startech.com/faq/usb-c-port-capabilites.

Thunderbolt symbol: https://sgcdn.startech.com/005329/media/products/gallery_large/TBLT3MMXM.B.jpg.

This device requires that the Thunderbolt 3 host system provides 15W of bus power to the Thunderbolt 3 port. Thunderbolt 3 host systems that do not provide the full 15W of bus power will not work with this device.  

Refer to the information provided by the manufacturer to confirm the power delivery capabilities of your host system.

No, this device has an intended source and destination, and does not convert in the opposite direction. For more information about the order that this device converts in, refer to the title on the product page.

No, this device will not pass through the full wattage of bus power from the host Thunderbolt 3 port. This adapter uses up to 4.5W of power, which prevents devices that require the full wattage of bus power from working.

No, this device doesn't work when connected directly to an MST hub, a DisplayPort display, or a Mini DisplayPort display.

If you need to connect multiple displays to your Thunderbolt™ 3 system, you should use a Thunderbolt 3 adapter. StarTech.com offers a Thunderbolt 3 to Dual HDMI adapter (TB32HD2) and a Thunderbolt 3 to Dual DisplayPort adapter (TB32DP2).

Note: To use the TB32HD2 and TB32DP2 adapters, your Thunderbolt 3 system must support dual displays. For more information, refer to the following FAQ: https://www.startech.com/faq/thunderbolt-3-dual-monitor-adapter-single-display-only.