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Thunderbolt 3 Upgrade Card (for Echo Express SE II)

Thunderbolt 3 Upgrade Card (for Echo Express SE II)

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Our PN: SNTN5250053
Manufacturer: Sonnet
Platform(s): Mac & Win

Availability: Usually ships in 2-business days or less.

List Price:$149.00

You Save: $15.00 (10%)


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Quick Overview

2-port 40Gbps Thunderbolt 3 interface upgrade cards, replace Thunderbolt 2 interface cards in Echo Express Thunderbolt 2 to PCIe Card Expansion Systems and select Sonnet Thunderbolt 2 adapter


Step Up to 40Gbps Thunderbolt 3
Thunderbolt 3 Upgrade Card IconSonnet designed Echo Express Thunderbolt 2-to-PCIe card expansion systems (and select Thunderbolt 2 adapters) to be easily upgraded to 40Gbps Thunderbolt 3(1). 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(2) 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 (see performance Tab for details). 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(3).

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(5); they also provide full support for connecting two 4K displays @ 60Hz or one 5K display @ 60Hz(6).

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(7), 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.

Key Features

Easy to Install 40Gpbs Thunderbolt 3
Upgrade Card—Replaces existing 20Gbps Thunderbolt interface board in your Thunderbolt 2-to-PCIe card expansion system(1)

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 Ports
One port reserved for connection to the computer; second port supports daisy-chaining of up to five additional Thunderbolt(4) devices, attaching a single USB peripheral device(5), or connecting up to two 4K displays or one 5K display(6)

ThunderLok 3-Compatible
Thunderbolt connector retainer clip secures cable from accidental disconnections


  • Warranty 1-year
  • External Connectors Two Thunderbolt 3 ports
  • Operating Temperature 0˚C to 35˚C (32˚F to 95˚F)
  • RoHS Compliant Yes
  • Package Contents 
    • Thunderbolt 3 upgrade card
    • Documentation

Mac Compatibility

  • All Upgrade Card Models
  • Mac with Thunderbolt 3 ports
  • Mac with a Thunderbolt 2 or Thunderbolt port with an Apple Thunderbolt 3 (USB C) to Thunderbolt 2 Adapter
  • macOS 10.12.6+

PC Compatibility

  • All Upgrade Card Models
  • PC with a Thunderbolt 3 port(1)
  • Windows® 10 (Version 1703 and newer)
  • Important note: Windows computers require the latest BIOS and Thunderbolt drivers to support this product. Check with your computer manufacturer for update information.


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