Twin10G (Thunderbolt 3 Edition)


Twin10G (Thunderbolt 3 Edition)

Dual-port 10GBASE-T Thunderbolt 3 adapter for adding 10GbE connectivity.


Twin10G (Thunderbolt 3 Edition)

Dual-port 10GBASE-T Thunderbolt 3 adapter for adding 10GbE connectivity.

Twin10G (Thunderbolt 3 Edition)

Dual-port 10GBASE-T 10 Gigabit Ethernet Thunderbolt 3 Adapter

Blazing-fast 10GBASE-T (Copper) Connectivity Over Thunderbolt 3 for Mac, Windows, and Linux Computers

Increased demand for greater data transfer speeds and more bandwidth on high-performance shared storage networks has driven the explosion in demand for 10Gigabit Ethernet (10GbE) networking. Yet, most computers aren’t equipped to get you connected. If your computer has a Thunderbolt™ 3 port, you are in luck—Sonnet’s Twin10G™ (Thunderbolt 3 Edition) 10GbE adapter is the powerfully simple and most cost-effective solution for adding blazing-fast dual-port 10GBASE-T 10GbE network connectivity to any Mac®, Windows®, or Linux® computer with Thunderbolt 3 ports.


Connect to 10GbE Infrastructure

The Twin10G (Thunderbolt 3 Edition) adapter is equipped with two RJ45 ports, enabling it to connect to 10GbE infrastructure via inexpensive Cat 6 or Cat 6A copper cabling at distances up to 55 or 100 meters, respectively.

Key Features
10GbE Icon Adds 10GBASE-T 10GbE Connectivity

Simply powerful way to add dual RJ45 10 Gigabit Ethernet ports to your computer with Thunderbolt 3 ports.

Cost-Effective Icon Cost-Effective

Connects to 10GbE infrastructure via inexpensive Cat 6 or Cat 6A cables at distances up to 55 or 100 meters, respectively.

Tools Icon Easy Setup

Configure the adapter’s settings using operating system tools.

40Gpbs Icon 40Gbps Thunderbolt 3 Interface

Offers 2750 MB/s of PCIe bandwidth, doubling the performance of Thunderbolt 2.

Thunderbolt 3 Ports Icon Two Thunderbolt 3 Ports

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

Rugged Icon Small. Rugged. Nearly Noiseless.

Rugged aluminum enclosure is compact enough to sit on most any work surface, and quiet enough for use in noise-sensitive environments.

Transparent Failover Icon Supports Transparent Failover

Keeps your computer connected in case a single cable is disconnected or one of the ports fails.

Link Aggregation Icon Supports Link Aggregation (Teaming)

Increases throughput beyond what a single connection can sustain in some applications.

Power Icon Power for Peripherals

Provides up to 15W of power to connected peripherals.


Small and Nearly Noiseless

The Twin10G (Thunderbolt 3 Edition) adapter is compact enough to easily fit in most workspaces, yet 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 noise-sensitive environments. Constructed of rugged and lightweight aluminum, the adapter’s outer shell securely protects the inner circuitry.
Simplified Setup

How simple? Just connect the Twin10G (Thunderbolt 3 Edition) adapter to your computer via the included Thunderbolt 3 (40Gbps) cable, download and install a driver, connect the adapter to the network switch or directly to 10GbE-enabled storage via Cat 6 or Cat 6A cables, and configure the adapter’s settings through the macOS® Network control panel, Windows Device Manager, or Linux command line (or graphical utility).

Intelligent Operation

The Twin10G SFP+ adapter’s high throughput performance and low host-CPU utilization are attained through functions such as flow control, 64-bit address support for systems using more than 4GB of physical memory; and stateless offloads such as TCP, UDP and IPv4 checksum offloading. These operations enable your computer to perform better while large files transfers or high I/O operations take place. This Sonnet adapter’s dual 10GbE connections support transparent failover to keep your computer connected in case a single cable is disconnected or one of the ports fails, and also support link aggregation (teaming) for increased throughput!



Thunderbolt 3 – The USB-C That Does It All

Thunderbolt 3 ports – the first connects the adapter to your computer, while the second supports daisy-chaining of up to five additional Thunderbolt peripheral devices to a single port on your computer. The Sonnet adapter includes 10Gbps USB 3.2 Gen 2 support, meaning you can connect a USB device to the second port using the proper cable or adapter. The Twin 10G also provides full support for connecting two 4K displays @ 60Hz or one 5K display @ 60Hz. For connected devices requiring extra power, 15 watts is provided to connected bus-powered devices.

Included at No Extra Charge

Thunderbolt 3 Cable. ThunderLok 3.

Sonnet includes a 0.7-meter Thunderbolt 3 (40Gbps) cable that supports Thunderbolt 3’s full 2750 MB/s PCIe bandwidth. Sonnet also provides a ThunderLok™ 3 Thunderbolt connector retainer clip that prevents accidental cable disconnections—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 remains on the cable so it won’t get lost when not in use.

Additional information

Weight 1340 g
Dimensions 10.3 × 21.0 × 7.3 cm
Form Factor


External Connectors

2x Thunderbolt 3 ports
2x RJ45 ports
1x 12V power port

Network Support

10BASE-T (100 meters using Cat 6A cabling; 55 meters using Cat 6 cabling)
5GBASE-T, 2.5GBASE-T, 1000BASE-T, 100BASE-TX (100 meters using Cat 5e, Cat 6, or Cat 6A cabling)

Data Rates Supported

10 Gb/s

Advanced Features

Flow control support
MSI (Message Signaled Interrupts)
RSS (Receive-Side Scaling)
Interrupt coalescing
Multicast filtering
64-bit address support for systems using more than 4GB of physical memory
Wake-on-LAN support not supported

In The Box

Twin10G (Thunderbolt 3 Edition) adapter
0.7-meter Thunderbolt 3 (40Gbps) cable
ThunderLok 3 Thunderbolt Connector Retainer Clip(7)
Universal power adapter
Power cord


Mac Compatibility

Mac (Intel®) with Thunderbolt 3 ports
Mac (Intel) with a Thunderbolt 2 or Thunderbolt port with an Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter plus a Thunderbolt 2 cable (both sold separately)
Mac (M1) not currently compatible (Sonnet M1-compatible driver expected Q1 2021)
macOS 10.12.6+
macOS Big Sur compatible

Windows Compatibility

PC with Thunderbolt 3 ports
Windows 10 (64-bit Edition Version 1809 or greater)
IMPORTANT NOTE: Windows computers require the latest BIOS and Thunderbolt drivers to support this product. Check with your computer manufacturer for update information.

Linux Compatibility

Linux computer with Thunderbolt 3 ports
Linux Kernel 5.0+


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