Original Apple Thunderbolt 3 USB-C to Thunderbolt 2 Adapter (Model A1790) | Compatible with MacBook Pro, iMac and Thunderbolt Displays

The Apple Thunderbolt 3 USB-C to Thunderbolt 2 Adapter (Model A1790) allows connection between Thunderbolt 3 or USB-C Macs and Thunderbolt 2 devices.
It is designed specifically for Thunderbolt connectivity, not standard USB-C to Mini DisplayPort conversion.

This adapter is bidirectional. It can connect Thunderbolt 2 devices such as external drives or docks to newer Thunderbolt 3 Macs.
It can also connect Thunderbolt 3 devices to older Thunderbolt 2 Macs when used appropriately.

Compatibility depends on the device type. It works with Thunderbolt devices and supports the Apple Thunderbolt Display when used with compatible Macs.
It does not convert USB-C video signals to Mini DisplayPort-only monitors that are not Thunderbolt-enabled.

Before purchasing, confirm that your device is Thunderbolt-enabled and not just Mini DisplayPort.
Thunderbolt devices include a lightning bolt symbol near the port.

Detailed Compatibility

Compatible With

• Mac models with Thunderbolt 3 (USB-C) ports
• Mac models with Thunderbolt 2 ports
• Thunderbolt 2 external drives and docks
• Apple Thunderbolt Display

Bidirectional Support

• Connect Thunderbolt 2 devices to Thunderbolt 3 Macs
• Connect Thunderbolt 3 devices to Thunderbolt 2 Macs

Product Identification

• Model Number: A1790
• Adapter Type: Thunderbolt 3 (USB-C) to Thunderbolt 2
• Color: White

Not Compatible With

• Standard Mini DisplayPort monitors without Thunderbolt
• USB-C devices that are not Thunderbolt-enabled
• HDMI-only displays

Technical Specifications