• Overview
  • Technical Specifications
  • Accessories

Lightning Fast 10GBase-T Connectivity Over Thunderbolt

With increasing demands for greater data transfer speeds and more bandwidth over shared networks, and with specialized applications such as HD video editing using high-performance shared storage systems, the deployment of 10 Gigabit Ethernet (10GbE) networking has skyrocketed. This high-speed wired networking standard offers ten times the performance of Gigabit Ethernet, the most common wired network connection included with most computers today, and yet, most computers aren’t equipped to get you connected. If you have a computer with a Thunderbolt port(1), Sonnet has a simple solution—the Twin 10G. This Thunderbolt-certified for Mac® and Windows, 10GBase-T adapter is a powerful and cost-effective way to add 10GbE connectivity to your setup.

10GbE & Thunderbolt Logos
The Twin 10G is equipped with two RJ45 and two Thunderbolt 2 ports. Using RJ45 connectors, the Twin 10G is able to connect to 10 Gigabit infrastructure via inexpensive CAT-6 or CAT-6A copper cabling at distances up to 55 or 100 meters, respectively. Through one of its two Thunderbolt 2 ports, the Twin 10G connects to your computer through an included Thunderbolt cable; the second Thunderbolt port supports daisy chaining up to six devices to a single port on the host computer.

Aluminum LogoSleek, Quiet, and Compact

The Twin 10G is a striking example of form following function—this adapter’s attractive and rugged aluminum housing is engineered to effectively dissipate heat. Together with a temperature-tuned, ultra-quiet fan to quietly cool the components inside, this design enables the Twin 10G to be used comfortably in noise-sensitive environments. Measuring just 4.9" wide x 6.3" long x 2.7" high, the Twin 10G takes up little space.

Simple Configuration, Advanced Features

The Twin 10G is easy to set up. To keep things simple, you configure its settings through the OS X® Network control panel or Windows Device Manager. When you configure the device, you can also activate its advanced features: link aggregation (teaming) of its two 10GbE ports increases throughput beyond what a single connection can sustain; transparent failover between 10GbE ports keeps your computer connected in case a single cable is disconnected or one of the ports fails; jumbo packet (jumbo frame) support can increase throughput and reduce CPU utilization; and Wake-on-LAN support enables remotely waking your computer when you need it, and not wasting energy when you don’t.

10x the Performance of Gigabit Ethernet

This Sonnet solution is perfect for high-performance computing where low latency, high bandwidth, and low CPU overhead are required. Its increased throughput performance and low host-CPU utilization are achieved with stateless offloads, allowing your computer to perform better while large files transfers or high I/O operations take place.


Key Features

Adds 10GbE Connectivity—Simple way to add dual RJ45 10 Gigabit Ethernet ports to your Thunderbolt 2- or Thunderbolt-enabled computer

Cost Effective—Connects to 10GbE infrastructure via inexpensive CAT-6 or CAT-6A cables at distances up to 55 or 100 meters, respectively

Two Thunderbolt 2 Ports—Maximum performance with computers with 20Gbps Thunderbolt 2 technology, works with host computers and other devices equipped with 10Gbps Thunderbolt technology. Daisy chain up to six devices.

Thunderbolt-Certified for Mac and Windows—One-size-fits-many solution for mixed computer environments

Sleek, Quiet, Compact—Handsome aluminum housing and ultra-quiet fan effectively cool the components, enabling use in noise-sensitive environments; compact size allows easy placement

Easy Setup—Simple driver installation, configured through OS X Network control panel or Windows Device Manager

Supports Wake-on-LAN—Adapter can remotely wake computer

Supports Transparent Failover—Keeps your computer connected in case a single cable is disconnected or one of the ports fails

Supports Link Aggregation (Teaming)—Increases throughput beyond what a single connection can sustain

Mac Pro Mate—Using optional Twin 10G Mounting Kit, supports mounting in Sonnet’s RackMac Pro rackmount solution for the new Mac Pro


New Mac Pro Mate

The Twin 10G incorporates mounting points to support firm attachment to our RackMac™ Pro rackmount enclosure for the new Mac Pro. Using the optional Twin 10G Mounting Kit, the adapter is secured to the inside of the enclosure, thereby enabling 10GbE connectivity for the Mac Pro via a separate Thunderbolt 2 port for maximum bandwidth without taking up a PCIe slot or requiring extra rack space.

Twin 10G Mounting Kit

Optional Twin 10G Mounting Kit—Secures Sonnet's Twin 10G 10 Gigabit Ethernet Thunderbolt 2 adapter next to a Mac Pro inside the RackMac Pro chassis.




See Technical Specifications Tab for footnotes
Part No.  
TWIN10G-TB2 Twin 10G Thunderbolt 2 to Dual-Port 10 Gigabit Ethernet Adapter
Warranty 1-year
Dimensions WxDxH:

4.9 x 6.3 x 2.7 in. (12.5 x 16 x 6.8 cm)

Weight (including power supply) 3.3 lbs. (1.5 kg)
External Connectors
(Qio Enclosure)
  • Two Thunderbolt 2
  • Two RJ45
  • 12V power   
Cable Distance
  • CAT-6 cable – 55m
  • CAT-6A cable – 100m
Network 10Gbase-T
Packets Maximum packet size: 9000 bytes (jumbo packets)
Stateless Offloads
  • IP and TCP checksum offload, send and receive
  • TSO (TCP Segmentation Offload, AKA Large Send Offload)
  • LRO (Large Receive Offload)
  • RSS (Receive-Side Scaling)
  • Interrupt Coalescing
  • Multicast filtering
Power Supply Universal 60W, 100-240V AC, 50-60 Hz
Operating Temperature 0˚ C to 35˚ C (32˚ F to 95˚ F)
RoHS Compliant Yes
Package Contents
  • Twin 10G Thunderbolt 2 to Dual-Port 10 Gigabit Ethernet Adapter
  • 0.5m Thunderbolt cable
  • Universal power adapter
  • Power cord
  • Documentation


Specifications subject to change without notice.

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Mac Compatibility

Mac® with a Thunderbolt or Thunderbolt 2 port

OS X® 10.8.5+

PC Compatibility

PC with a Thunderbolt 2 port

Windows 8, 7, Server 2012, Server 2008


Mac LogoWindows LogoroHS Logo


Twin 10G Accessories Part No. Description
Thunderbolt Cable Thunderbolt Cable TCB-TB-05M 0.5-meter Thunderbolt cable
Thunderbolt Cable Thunderbolt Cable TCB-TB-1M 1-meter Thunderbolt cable
Twin 10G Mounting Kit Twin 10G Mounting Kit RACK-PRO-10G-KT Mounting kit to secure Twin 10G 10 Gigabit Ethernet Thunderbolt 2 adapter inside a RackMac Pro