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Thunderbolt 3 Upgrade Card (for Echo Express SE I)

Thunderbolt 3 Upgrade Card (for Echo Express SE I)

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Our PN: SNTN5250049
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 (USB-C) interface upgrade cards, replace Thunderbolt 2 interface cards in Echo Express Thunderbolt 2-to-PCIe Card Expansion Systems and select Sonnet Thunderbolt 2 adapters.



Manufacturer Part Number: BRD-UPGRTB3-SE1

Key Features

  • Easy to Install 40Gpbs Thunderbolt 3
  • Upgrade CardReplaces existing 20Gbps Thunderbolt interface board in your Thunderbolt 2-to-PCIe card expansion system(1)
  • Improved Performance with High-Bandwidth
  • PCIe CardsYour upgraded expansion system will provide from 30% to 100% more bandwidth for installed PCIe cards
  • Two Thunderbolt 3 (USB-C) PortsOne 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-CompatibleThunderbolt connector retainer clip secures cable from accidental disconnections

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).

Upgrade Instead of Adapting
Why adapt when upgrading offers more? With the Thunderbolt 3 upgrade card installed you get:

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

ThunderLok 3-Compatible
Sonnets 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 usejust 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 wont get lost when not in use.


Part No.
BRD-UPGRTB3-SELThunderbolt 3 Upgrade Card for Echo Express SEL (Thunderbolt 2 Edition) and SEL-Based Thunderbolt 2 Adapters
BRD-UPGRTB3-SE1Thunderbolt 3 Upgrade Card for Echo Express SE I (Thunderbolt 2 Edition)
External ConnectorsTwo Thunderbolt 3 (USB-C) ports
Operating Temperature

0C to 35C (32F to 95F)

RoHS CompliantYes
Package Contents
  • Thunderbolt 3 upgrade card
  • Documentation



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)


Echo Express SE I (Thunderbolt 2 Edition)

Mac Compatibility

MacBook Pro (15-inch, Late 2016)

MacBook Pro (13-inch, Late 2016, Four Thunderbolt 3 Ports)(3)

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(9)

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.


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