Sonnet Thunderbolt 3 Upgrade Card for Sonnet SEL

Upgrade Sonnet SEL from Thunderbolt 2 to Thunderbolt 3

Take advantage of the increase in speed that Thunderbolt 3 offers over the previous generation with this easy-to-install 2-port Thunderbolt 3 interface card for your existing Sonnet SEL PCIe expansion chassis.

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£229.00 £190.83
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Step Up to 40Gbps Thunderbolt 3
Sonnet designed Echo Express Thunderbolt 2-to-PCIe card expansion systems (and select Thunderbolt 2 adapters) to be easily upgraded to 40Gbps Thunderbolt 3. Simply replace the existing Thunderbolt interface board with the upgrade board, and then your chassis will instantly support higher performance, and connect to your Thunderbolt 3-equipped computer without needing an adapter.

Increased Bandwidth, Better Performance
With a Thunderbolt 3 interface card installed, your upgraded Echo Express Thunderbolt 2 system gains from 30% to 100% more bandwidth over the original system. Installed in an upgraded system, PCIe cards with high bandwidth requirements, such as 16Gb Fibre Channel and 4K Video I/O cards supporting high frame rates, will be able to perform even better than before.

Increased Bandwidth
The Thunderbolt 3 upgrade card provides increased bandwidth due to 40Gbs Thunderbolt 3. With an adapter you are limited to 20Gbs Thunderbolt 2 bandwidth.

Optimal Thunderbolt 3 Daisy Chaining
The upgrade card supports additional Thunderbolt 3 peripheral devices in the Thunderbolt chain with 40Gbs bandwidth. With an adapter all downstream devices in the Thunderbolt chain can only be Thunderbolt or Thunderbolt 2 devices.

Connect USB Devices
Sonnet's Thunderbolt 3 upgrade cards also include 10Gbps USB 3.1 Gen 2 support, meaning you can connect a USB device to the second port using the proper cable or adapter; they also provide full support for connecting two 4K displays @ 60Hz or one 5K display @ 60Hz.

ThunderLok™ 3-Compatible
Sonnet’s Thunderbolt 3 upgrade cards support the ThunderLok 3 Thunderbolt connector retainer clip. The ThunderLok 3 (sold separately) secures the Thunderbolt cable (sold separately) to the chassis, and is easy to install and use—just slide it over one end of the cable, and then plug in the connector and secure it to the chassis by turning a thumbscrew. Because of its unique design, ThunderLok 3 remains on the cable so it won’t get lost when not in use.

Easy to Install 40Gpbs Thunderbolt 3 Upgrade Card

Replaces existing 20Gbps Thunderbolt interface board in your Thunderbolt 2-to-PCIe card expansion system

Improved Performance with High-Bandwidth PCIe Cards

Your upgraded expansion system will provide from 30% to 100% more bandwidth for installed PCIe cards

Two Thunderbolt 3 (USB-C) Ports

One port reserved for connection to the computer; second port supports daisy-chaining of up to five additional Thunderbolt devices, attaching a single USB peripheral device, or connecting up to two 4K displays or one 5K display

ThunderLok 3-Compatible

Thunderbolt connector retainer clip secures cable from accidental disconnections

More Information
  • Warranty: 1-year
  • External Connectors: Two Thunderbolt 3 (USB-C) ports
  • Operating Temperature: 0ËšC to 35ËšC (32ËšF to 95ËšF)
  • RoHS Compliant: Yes


Sonnet Hardware Compatibility

  • Echo Express SEL (Thunderbolt 2 Edition)
  • Echo Express SEL 10GbE
  • Twin 10G SFP+
  • Sonnet Thunderbolt 2 to mini-SAS adapter (included with Fusion DX800RAID Thunderbolt 2 Edition)


Mac Compatibility

  • MacBook Pro (15-inch, Late 2016)
  • MacBook Pro (13-inch, Late 2016, Four Thunderbolt 3 Ports)
  • MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports)
  • Macs with Thunderbolt 2 or Thunderbolt ports with the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter
  • macOS 10.12.1+


PC Compatibility

  • PC with a Thunderbolt 3
  • Windows 10, 8, 7

Important note: Your PC may require updates to insure that the Thunderbolt 3 ports function properly. Review this web site for further instructions.


  • Thunderbolt 3 upgrade card
  • Documentation