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Sonnet Thunderbolt 3 Upgrade Card for Echo Express SEL and SEL-Based Thunderbolt 2 Adapters

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In stock at supplier: Yes

Leaves our warehouse in 6-8 weeks

Shipping cost is $9.90 (flat rate) for any size order.
This product is covered by an Australian Replacement Warranty.
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Product code: BRD-UPGR-TB3-SEL

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The Thunderbolt 3 Upgrade Card from Sonnet upgrades your Thunderbolt 2 system to 40 Gb/s Thunderbolt 3.

Your price: $428.99

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The Thunderbolt 3 Upgrade Card from Sonnet upgrades your Thunderbolt 2 system to 40 Gb/s Thunderbolt 3. By replacing the existing Thunderbolt interface board on your Echo Express SEL and SEL-Based Thunderbolt 2 Adapters with this upgrade board, your chassis will instantly support higher performance, and connect to your Thunderbolt 3-equipped computer without needing an adapter.

With the 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 16 Gb Fiber Channel and 4K Video I/O cards supporting high frame rates, will be able to perform better than before.


Replaces existing 20 Gb/s Thunderbolt interface board

Easy to install

Two Thunderbolt 3 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

Compatible with ThunderLok 3 retainer clip


Product Highlights

  • Thunderbolt 2 to Thunderbolt 3 Upgrade
  • 40 Gb/s Thunderbolt 3
  • Increased Bandwidth
  • Two Thunderbolt 3 Ports
  • Optimal Thunderbolt 3 Daisy Chaining
  • ThunderLok 3-Compatible


Compatibility Hardware Compatibility:
Echo Express SEL (Thunderbolt 2 Edition)
Echo Express SEL 10 GbE
Twin 10G SFP+
Sonnet Thunderbolt 2 to mini-SAS adapter (included with Fusion DX800RAID Thunderbolt 2 Edition)
Mac Compatibility:
Mac with Thunderbolt 3 ports
Mac with a Thunderbolt/Thunderbolt 2 port with an Apple Thunderbolt 3 to Thunderbolt 2 adapter
macOS 10.12.6+
PC Compatibility 
PC with a Thunderbolt 3 port
Windows 10 (Version 1703 and newer)
External Connectors 2 x Thunderbolt 3 ports
Interface 40 Gb/s Thunderbolt 3
System Performance 2750 MB/s
Compliance RoHS
Operating Temperature 32 to 95°F / 0 to 35°C

Additional Information

Colour No
Type No
Connection Thunderbolt 3 (40Gb/s)
Interface Thunderbolt
Form Factor No
Suitable for No
Model Identifier No
Manufacturer Sonnet
Manufacturer P/N BRD-UPGR-TB3-SEL
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Macfixit Australia is an Australian owned and operated business based in Melbourne, Victoria and we've been operating since 2005.

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Shipping cost is $9.90 (flat rate) for any size order. Express Options are available in cart/checkout. All in-stock orders are shipped the same day if received by 10.30 AM (Eastern Time Victoria). Orders received after 11:00 AM are shipped the following business day.

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