Twin10G SFP28 Thunderbolt Adapter Lifestyle Shot Showing Twin10G SFP28 Adapter at an Angle with Two SFP28 Transceiver Sitting Close By
Blazing Fast
10GbE Optical Networking
Twin10G SFP28 Thunderbolt Adapter Lifestyle Shot Showing Twin10G SFP28 Adapter at an Angle with Two SFP28 Transceiver Sitting Close By
Blazing Fast 10GbE Optical Networking
Twin10G SFP28 Thunderbolt Adapter
Dual-port SFP28 Gigabit Ethernet Thunderbolt Adapter
Compatible with Mac®, Windows®, and Linux® computers with Thunderbolt™ Ports
Women Sitting Behind Computer System in Office SettingThunderbolt Logo
Add Blazing-fast Optical 10GbE Connectivity Over Thunderbolt
Are you looking for the most economical dual-port approach to connecting to a high-speed 10 Gigabit Ethernet (10GbE) fiber network using the Thunderbolt port on your Mac, Windows, or Linux computer? You’ll need the Sonnet adapter. Sonnet Twin10G™ SFP28 Thunderbolt Adapter is the powerfully simple solution for adding blazing-fast dual-port 10GbE optical network connectivity to your computer.

Twin10G SFP28 Thunderbolt Adapter is a pre-configured bundle of Sonnet Twin10G SFP28 PCIe Card with Sonnet Echo™ Express SEL Thunderbolt Expansion System.
Twin10G SFP28 Thunderbolt Adapter Rear Panel with Two SFP28 Transceivers Sitting Next to Adapter
Includes Two SFP28 Transceivers

Easy Network Connection

To enable easy connection to your 10GbE optical network, Twin10G SFP28 adapter includes two short-range multi-mode fibre SFP28 transceivers (up to 300 meters).
Long Range SFP28 Transceivers Available – Sonnet also offers long-range single-mode fiber modules that support 10Gb connections at up to 10 kilometers.
Lifestyle Shot Showing Abstract Ideas of Networking Bandwidth

10x Performance

More Bandwidth

10x the Performance of Gigabit Ethernet

Each Twin10G port supports ten times the performance of Gigabit Ethernet with even more bandwidth when combining ports.
IT Professional Maintaing Server Systems In a Larger Server Room
SMB Multichannel Support

Maximizes Throughput and Reliability with SMB Multichannel

Harness the full potential of Sever Message Block (SMB) Multichannel support with our Twin10G SFP28 adapter. When both ports are connected to your SMB server, you can combine their bandwidth to achieve significantly higher data transfer speeds, and more. SMB Multichannel support brings several key benefits:
Checkmark Icon
Increased Throughput: By utilizing two network connections, the bandwidth of each port can be combined to deliver twice the data transfer rate.
Checkmark Icon
Increased Scalability: Easily expand your network’s capabilities. As your infrastructure grows, connect the additional Twin10G port to scale throughput without complex reconfiguration.
Checkmark Icon
Improved Fault Tolerance: Seamlessly keeps your computer connected in case a single cable is disconnected or one of the ports fails.
Checkmark Icon
Enhanced Load Balancing: Network traffic is dynamically distributed across available connections to prevent congestion and optimize performance under varying network demands.
Checkmark Icon
Reduced Latency: Minimizes delays by balancing traffic paths to enhance responsiveness in real-time operations.

Key Features

10GbE Icon

Adds High-performance 10GbE Fiber Connectivity

Simply powerful way to add dual 10GbE fibre connections to your computer with Thunderbolt ports.

SFP28 Transceivers Icon

SFP28 Transceivers Included

High-performance adapter includes two short range (300m) SFP28 transceivers.

Stopwatch Icon

Increased Throughput

By utilizing two network connections to SMB Servers, the bandwidth of each port can be combined to deliver twice the data transfer rate.


Teaming on Windows and Linux Icon

Supports Teaming on Windows and Linux

Increases throughput beyond what a single connection can sustain.

Rugged Icon

Compact. Rugged. Nearly Noiseless.

Adapter is rugged and small enough to sit on most any work surface, and quiet enough for use in noise-sensitive environments.

Thunderbolt Logo Icon

Thunderbolt to PCIe Device

Enough PCIe bandwidth to support two 10Gb ports at full speed.

Two Thunderbolt Ports Icon

Connect Additional Thunderbolt Devices

One port connects to computer; second port supports daisy-chaining of additional Thunderbolt peripheral devices.

Apple Logo Icon

Mac Compatible

Supports Apple M series Macs, and Intel® Macs with Thunderbolt 3 ports.

Windows and Linux Logos Icon

Windows and Linux Compatible

Supports Windows and Linux computers with Thunderbolt 5, 4, or 3 ports.

Free lifetime tech support icon.

Sonnet Support

Founded in 1986 in Orange County, Southern California — the vibrant hub of technology and engineering south of Silicon Valley — Sonnet has been at the forefront of innovation. Over the years, we've developed numerous award-winning products that enhance performance and connectivity for Mac, Windows, and other industry-standard computers. Many of our team members have been with us for over two decades, providing us with extensive expertise about our current and past offerings. If you ever need technical support for any of our products, don’t hesitate to reach out; we’re here to assist you.

Woman Programmer Sitting Behind Desk with Multiple Monitors
Fan Icon
Small. Cool. Adaptable.

Suitable for Use in Noise-sensitive Environments

Small enough to easily fit in most workspaces, Twin10G SFP28 adapter is still large enough to support proper airflow inside the case – its design enables the adapter’s temperature-controlled, variable-speed fan to keep the adapter running cool and whisper-quiet at all times, making it suitable for use in in almost any workspace. Constructed of rugged and lightweight aluminum, the adapter’s outer shell securely protects the inner circuitry.
Twin10G SFP28 Thunderbolt Adapter Front Panel Shot
Smart Controller

Intelligent Operation. Efficient Performance.

Twin10G SFP28 adapter attains high throughput performance with minimal host CPU load. The adapter’s smart controller has its own internal processing system with onboard memory to process TX/RX data while using few CPU resources. Once data appears in queues, TX checksums are computed on the fly as data is transmitted; RX checksums are quickly verified, and data is immediately passed directly to main memory. This independent controller action minimizes latency and avoids packet drops. The CPU is freed for other tasks.
Sonnet Thunderbolt cable and ThunderLok icon.
Secure Connections for High Performance

Thunderbolt Cable and ThunderLok Included

Sonnet includes a Thunderbolt cable that supports Thunderbolt’s maximum bandwidth and is fully compatible with Thunderbolt 5, 4, and 3 computers. Sonnet also provides ThunderLok, a Thunderbolt connector cable lock, that prevents accidental cable disconnections.
Sonnet Thunderbolt cable with ThunderLok sitting beside it.
Thunderbolt port with threaded hole icon.

ThunderLok Advantage

Many Sonnet Thunderbolt products featuring Thunderbolt ports come equipped with threaded mounting holes to securely attach a Sonnet ThunderLok connector lock, preventing Thunderbolt cables from accidentally disconnecting.

Thunderbolt Technology

Fastest External Interface Available

Sonnet Thunderbolt products feature a high-speed Thunderbolt interface that delivers PCIe bandwidth needed to support data transfers at full speed.

Two Thunderbolt ports icon.
Connect Additional Thunderbolt Devices
One port is reserved for connecting to your computer; the second port enables connection of additional Thunderbolt peripheral devices in a daisy chain.
10Gbps USB 3.2 Gen 2 icon.
10Gbps USB 3.2 Gen 2 Support
10Gbps USB 3.2 Gen 2 support allows you to connect a USB device to the second Thunderbolt port using the proper cable or adapter.
15W power icon.
Provides 15W of Power
For peripherals requiring extra power, 15 watts is provided to bus-powered devices through the secondary Thunderbolt port.
Display icon.
Supports Connecting Up to One 8K Display
Maximize the utilization of one computer Thunderbolt port, connecting the largest display supported by your computer.

Why Choose Sonnet for Ethernet Networking?

We've got what you need for 25GbE, 10GbE, 5GbE, and 2.5GbE connections

  • macOS, Windows, and Linux support
  • 25GbE, 10GbE, 5GbE, and 2.5GbE network experts
  • One provider for all your networking solutions
  • Adapters for Thunderbolt computers
  • Single- and dual-port adapters
  • Copper and optical adapters
  • Networking PCIe cards

Learn More

Why Choose Sonnet for Ethernet Networking?

We've got what you need for all networking connections

  • macOS, Windows, and Linux support
  • 25GbE, 10GbE, 5GbE, and 2.5GbE network experts
  • One provider for all your networking connections
  • Adapters for Thunderbolt computers
  • Single- and dual-port adapters
  • Copper and optical adapters
  • Networking PCIe cards
Product
Supported Speeds
Interfaces
Controller
OS Compatibility
For Computers with Thunderbolt Ports
Sonnet Thunderbolt AVB Adapter Hero Photo
Sonnet Thunderbolt AVB Adapter
Learn More
  • 1Gb
  • RJ45
  • Broadcom
Solo2.5G Adapter Hero Photo
Solo2.5G USB-C to 2.5 Gigabit Ethernet Adapter
Learn More
  • 2.5Gb
  • 1Gb
  • 100 Mb
  • RJ45
  • Realtek
Solo2.5G Adapter Hero Photo
Solo5G USB-C to 5 Gigabit Ethernet Adapter
Learn More
  • 5Gb
  • 2.5Gb
  • 1Gb
  • 100 Mb
  • RJ45
  • Realtek
Solo10G Thunderbolt Adapter Hero Photo
Solo10G Thunderbolt Adapter
Learn More
  • 10Gb
  • 2.5Gb/5Gb
  • 1Gb
  • RJ45
  • Marvell
Solo10G SFP+ Thunderbolt Adapter Hero Photo
Solo10G SFP+ Thunderbolt Adapter
Learn More
  • 10Gb
  • SFP+ socket with SFP+ SR transceiver
  • Marvell
Twin10G Thunderbolt Adapter Hero Photo
Twin10G Thunderbolt Adapter
Learn More
  • 10Gb
  • 1Gb
  • 2x RJ45
  • Intel
Twin10G SFP28 Thunderbolt Adapter Hero Photo
Twin10G SFP28 Thunderbolt Adapter
Learn More
  • 10Gb
  • 2x SFP28 SR transceivers included
  • Mellanox
Twin25 Thunderbolt Adapter Hero Photo
Twin25 Thunderbolt Adapter
Learn More
  • 25Gb
  • 10Gb
  • 2x SFP28 SR transceivers included
  • Mellanox
For Computers or Thunderbolt Expansion Systems with PCIe Slots
Solo2.5G PCIe Card Hero Photo
Solo2.5G PCIe Card
Learn More
  • 2.5/5Gb
  • 1Gb
  • RJ45
  • Realtek
Solo10G PCIe Card Hero Photo
Solo10G PCIe Card
Learn More
  • 10Gb
  • 2.5/5Gb
  • 1Gb
  • RJ45
  • Marvell
Solo10G SFP+ PCIe Card Hero Photo
Solo10G SFP+ PCIe Card
Learn More
  • 10Gb
  • SFP+ socket including SFP+ SR transceiver
  • Marvell
Twin10G 10GBASE-T PCIe Card Hero Photo
Twin10G 10GBASE-T PCIe Card
Learn More
  • 10Gb
  • 1Gb
  • 2x RJ45
  • Intel
Twin10G SFP28 PCIe Card Hero Photo
Twin10G SFP28 PCIe Card
Learn More
  • 10Gb
  • 2x SFP28 SR transceivers included
  • Mellanox
Twin25G PCIe Card Photo
Twin25G PCIe Card
Learn More
  • 25Gb
  • 10Gb
  • 2x SFP28 SR transceivers included
  • Mellanox
McFiver PCIe Card Hero Photo
McFiver PCIe Card
Learn More
  • 10Gb
  • 2.5/5Gb
  • 1Gb
  • RJ45
  • 2x USB-C 3.2 Gen 2
  • 2x M.2 SSD sockets
  • Marvell
See Tech Specs for footnotes.
Product specifications and information subject to change without notice. Computer hardware and accessories featured in photos that are not included with product are shown for illustration purposes; items sold separately.

Twin10G SFP28 Thunderbolt Adapter