⚡ Limited Time: Save on the OWC Express 1M2 Thunderbolt 4 / USB4 Enclosure – Get Yours Before It’s Gone!

Flexx International Ltd
  • 0
No result found for your search.
  • Home
  • All Products
  • Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Categories
  • 🔍 Find Upgrades for My Mac
  • Mac Upgrades
  • Memory
  • Storage
  • Docks/Hubs
  • Enclosures
  • PCIe Cards
  • Adapters
  • Laptop Batteries
  • Tools & Service Kits
  • Peripherals
  • Dashcams/Bodycams
  • View More
Featured Products
OWC Express 1M2 USB4/Thunderbolt enclosure for NVMe M.2 SSDs - Portable External Storage
OWC Express 1M2 USB4/Thunderbolt 4 enclosure for NVMe M.2 SSDs - Portable External Storage
£120.00
OWC Envoy Ultra Thunderbolt™ 5 SSD – 6,000 MB/s Portable SSD (2TB/4TB) – Rugged & Fast External Drive
OWC Envoy Ultra Thunderbolt™ 5 SSD – 6,000 MB/s Portable SSD (2TB/4TB) – Rugged & Fast External Drive
£387.49
Sonnet Echo Thunderbolt 3 Dock with two slots for  M.2 NVMe SSD
Sonnet Echo Thunderbolt 3 Dock with two slots for M.2 NVMe SSD
£278.00
Sonnet Echo 13 Thunderbolt 5 Dock with SSD Storage (1TB-4TB), 140W Power, Mac/Windows/iPad Pro Compatible
Sonnet Echo 13 Thunderbolt 5 Dock with SSD Storage (1TB-4TB), 140W Power, Mac/Windows/iPad Pro Compatible
£466.49
Sonnet Silent Gen 4 PCIe card with 8 x M.2 NVMe SSD slots up to 64GB storage - add your own SSD
Sonnet Silent Gen 4 PCIe card with 8 x M.2 NVMe SSD slots up to 64GB storage - add your own SSD
£927.49
Transcend Portable SSD USB-C / USB-A model ESD310C
Transcend Portable SSD USB-C / USB-A model ESD310C
£31.49
OWC 128GB (4 x 32GB) PC4-21300 DDR4 2666MHz SODIMMs ram memory upgrade
OWC 128GB (4 x 32GB) PC4-21300 DDR4 2666MHz SODIMMs ram memory upgrade
£265.49
Flexx LX300 NVME SSD Kit for MacBook Pro Late 2013-2015 and MacBook Air Mid 2013-2017
Flexx LX300 NVME SSD Kit for MacBook Pro Late 2013-2015 and MacBook Air Mid 2013-2017
£42.49
OWC Aura Pro X2 SSD Upgrade for MacBook Pro, Air, iMac, Mini & Pro (2013-2019)
OWC Aura Pro X2 SSD Upgrade for MacBook Pro, Air, iMac, Mini & Pro (2013-2019)
£99.00
  • electro-track-order-icon
  • Free Delivery
  • electro-thumb
  • 99% Customers
    Feedback
  • electro-return-icon
  • 30 Days
    Return Policy
  • electro-payment
  • Payment
    Secure System
  • electro-brands-icon
  • Only Best
    Brands
% £-227.00
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II
Sonnettech

Sonnet Thunderbolt 3 Upgrade Card for Echo Express SE I and SE II

No reviews
  • Share
  • Tweet
Product SKU: BRD-UPGRTB3-SE1
Available:
Only 0 item in stock
0 item in stock
In stock
Pre-order
Out of stock
£227.00
Size
 
 
This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.
Want it delivered by
  • Description
  • Specification
  • Compatibility
  • Reviews

Sonnet designed the Echo™ Express SE I Thunderbolt™ 2 to PCIe card expansion system 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 computer without the need for an adapter.

Upgrade Instead of Adapting

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

  • Easy to Install 40Gbps Thunderbolt 3 Upgrade Card –
  • Replaces Existing 20Gbps Thunderbolt 2 Interface Board
  • Improves Performance with High-Bandwidth PCIe Cards –
  • Provides 30% More Bandwidth (Up to 1750 MB/s)
  • Two Thunderbolt 3 Ports
  • Compatible with Thunderbolt 3, Thunderbolt 4, and Thunderbolt/USB4 computers
  • ThunderLok™ 3-compatible
  • 2-year Product Warranty
  • Free Lifetime Customer Technical Support
  • Designed in the USA

Thunderbolt 3 Upgrade Card IconSonnet designed Echo™ Express and xMac™ mini Server Thunderbolt 2 to PCIe card expansion systems (plus 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 Sonnet Thunderbolt 2 system gains from 30% to 100% more bandwidth for the installed PCIe cards 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, or Displays

Sonnet's Thunderbolt 3 upgrade cards also provide 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 (included with xMac mini Server kit; otherwise sold separately) secures the Thunderbolt cable (included with xMac mini Server Kit; otherwise 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.

Sonnet Thunderbolt Expansion Partners

Sonnet works closely with the following partners to ensure Thunderbolt compatibility for their products.

See the PCIe Card Thunderbolt Compatibility Chart for a list of products that have passed Thunderbolt compatibility testing with Sonnet products.

Part No. BRD-UPGRTB3-SE1 / BRD-UPGRTB3-SE2

Warranty 2-years

External Connectors Two Thunderbolt 3 ports

Form Factor Full-height

Interface PCIe 3.0

Operating Temperature 0˚C to 35˚C (32˚F to 95˚F)

RoHS Compliant Yes

Package Contents

  • Thunderbolt 3 upgrade card
  • Documentation

Sonnet Hardware Compatibility

  • BRD-UPGRTB3-SE1
  • Echo Express SE I (Thunderbolt 2 Edition)
  • BRD-UPGRTB3-SE2
  • Echo Express SE II (Thunderbolt 2 Edition)

Mac Compatibility

  • Mac with Thunderbolt/USB4,Thunderbolt 4, or Thunderbolt 3 ports
  • Macs with Thunderbolt 2 or Thunderbolt ports with the Apple Thunderbolt 3 (USB C) to Thunderbolt 2 Adapter
  • macOS® 10.12.6+
  • macOS Ventura compatible

PC Compatibility

  • PC with Thunderbolt 4 or Thunderbolt 3 port(8)
  • Windows® 11 or 10
  • Part No. BRD-UPGRTB3-SEL, BRD-UPGRTB3-SE1
  • Windows 11 (Future Release 23H1+required), or 10
  • Part No. BRD-UPGRTB3-SE2, BRD-UPGRTB3-E3,
  • BRD-UPGRTB3-XM

Technical Notes

1. Check compatibility listings on this page for currently supported systems. Other systems will be added once certified.

 

2. Connection to a computer with Thunderbolt 3 ports requires the use of a Thunderbolt 3 (40Gbps) cable, like any of Sonnet’s Thunderbolt 3 cables, for full performance.

 

3. While each Thunderbolt 3 upgrade card features a 40Gbps interface, some computers equipped with Thunderbolt 3 use an implementation of Thunderbolt 3 technology that limits PCIe performance to 20Gbps. The MacBook Pro (13-inch, Late 2016, Four Thunderbolt 3 Ports) also has this limitation in the two right-hand Thunderbolt 3 ports, while offering full performance from the left-hand ports.

 

4. Second Thunderbolt 3 port supports Thunderbolt and Thunderbolt 2 devices on Macs when used with the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter, sold separately.

 

5. Second Thunderbolt 3 port supports USB 3.1 Gen 1 (5Gbps) or Gen 2 (10Gbps) devices when connected with proper cable or adapter (sold separately).

 

6. One 4K monitor directly supported. Two 4K monitors requires either a 4K monitor with multi-stream transport support (DP out), or a Thunderbolt 3-to-Dual DisplayPort adapter. 5K monitor support requires a Thunderbolt 3-to-Dual DisplayPort adapter.

 

7. ThunderLok 3 compatible specifically with Sonnet 0.5- and 0.7-meter Thunderbolt 3 cables; Sonnet 1-meter Thunderbolt 3 cables require ThunderLok 3L.

 

8. Windows computers require the latest firmware (BIOS) and other drivers to support this product. Check with your computer manufacturer for update information. Not all Mac-compatible PCIe cards are also compatible with Windows. See the PCIe Card Thunderbolt Compatibility Chart for details.

Sonnet Hardware Compatibility

BRD-UPGRTB3-SE1 - Echo Express SE I (Thunderbolt 2 Edition)

BRD-UPGRTB3-SE2 - Echo Express SE II (Thunderbolt 2 Edition)

 

Mac Compatibility

Mac with Thunderbolt/USB4,Thunderbolt 4, or Thunderbolt 3 ports

Macs with Thunderbolt 2 or Thunderbolt ports with the Apple Thunderbolt 3 (USB C) to Thunderbolt 2 Adapter

macOS® 10.12.6+

macOS Sonoma compatible

 

PC Compatibility

PC with Thunderbolt 4 or Thunderbolt 3 port(8)

Windows® 11 or 10
Part No. BRD-UPGRTB3-SEL, BRD-UPGRTB3-SE1

Windows 11 (Future Release 23H1+required), or 10
Part No. BRD-UPGRTB3-SE2, BRD-UPGRTB3-E3,
BRD-UPGRTB3-XM

Notes:

Windows computers require the latest firmware (BIOS) and other drivers to support this product. Check with your computer manufacturer for updated information. Not all Mac-compatible PCIe cards are also compatible with Windows. See the PCIe Card Thunderbolt Compatibility Chart for details.

 

Customer Reviews

Be the first to write a review
Write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Related products

OWC

OWC Express 1M2 USB4/Thunderbolt 4 enclosure for NVMe M.2 SSDs - Portable External Storage

OWC Express 1M2 USB4/Thunderbolt enclosure for NVMe M.2 SSDs - Portable External Storage
£120.00
OWC

OWC Envoy Ultra Thunderbolt™ 5 SSD – 6,000 MB/s Portable SSD (2TB/4TB) – Rugged & Fast External Drive

OWC Envoy Ultra Thunderbolt™ 5 SSD – 6,000 MB/s Portable SSD (2TB/4TB) – Rugged & Fast External Drive
£387.49
Select Options
OWC

OWC Envoy Pro 1A USB Enclosure for Apple SSDs (2013-2019 MacBook Pro, iMac, Mac Mini, Mac Pro)

OWC Envoy Pro 1A USB Enclosure For PCIe SSD from Apple Mac 2013 to 2019
£66.49
OWC

OWC Express 1M2 USB4 NVMe SSD – 1TB to 8TB – Mac & PC Compatible

OWC Express 1M2 USB4 NVMe SSD – 1TB to 8TB – Mac & PC Compatible
£243.49
Select Options
OWC

OWC Thunderbolt 5 Hub – Expand Connectivity with 3 Thunderbolt USB-C Ports, USB-A, 120Gb/s Speed, and 140W Charging

OWC Thunderbolt 5 Hub – Expand Connectivity with 3 Thunderbolt USB-C Ports, USB-A, 120Gb/s Speed, and 140W Charging
£200.49
Flexx

Flexx LX300 NVME SSD Kit for MacBook Pro Late 2013-2015 and MacBook Air Mid 2013-2017

Flexx LX300 NVME SSD Kit for MacBook Pro Late 2013-2015 and MacBook Air Mid 2013-2017
£42.49
Select Options
OWC

OWC Aura Pro X2 SSD Upgrade for MacBook Pro, Air, iMac, Mini & Pro (2013-2019)

OWC Aura Pro X2 SSD Upgrade for MacBook Pro, Air, iMac, Mini & Pro (2013-2019)
£99.00
Select Options
OWC

OWC 1867MHZ DDR3 204-Pin SODIMM PC3-14900 ram memory for Retina 5K 27-inch Late 2015 iMac

OWC 1867MHZ DDR3 204-Pin SODIMM PC3-14900 ram memory for Retina 5K 27-inch Late 2015 iMac
£19.49
Select Options
OWC

OWC Thunderbolt 5 (USB-C) Cable – High-Speed Data Transfer and 240W Power Delivery, Available in 30cm, 80cm, and 100cm Lengths

OWC Thunderbolt 5 (USB-C) Cable – High-Speed Data Transfer and 240W Power Delivery, Available in 30cm, 80cm, and 100cm Lengths
£23.00
Select Options
OWC

27-inch iMac 2012-2019 Thermal Fan Sensor & screen Adhesive Strips kit for SSD/HDD Upgrades

27-inch iMac 2012-2019 Thermal Fan Sensor & screen Adhesive Strips kit for SSD/HDD Upgrades
£37.00
Got questions? Call us
0800 195 4072
Follow Us
Policies
  • Privacy Policy
  • Refund Policy
  • Shipping Policy
  • Terms of Service
Company Info
  • Knowledge Base
  • About us
  • Contact Us
  • Blog
Shop
  • Mac Upgrades
  • Memory
  • Storage
  • Docks/Hubs
  • Enclosures
  • PCIe Expansion Cards
  • Adapters
  • Laptop Batteries
  • Tools & Service Kits
  • Peripherals
  • More
© 2025 Flexx International Ltd. All Rights Reserved | Made by Banbridge Website Studio
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa
  • Flexx International Ltd
Product successfully added to your Shopping Cart
Continue shopping View cart