Sonnet Twin10G Thunderbolt Adapter – Dual-Port 10GbE RJ45 Network Adapter

Need ultra-fast networking? The Sonnet Twin10G Thunderbolt Adapter brings serious 10GbE performance to your Mac, Windows, or Linux setup — no PCIe slot required. With dual RJ45 ports and Thunderbolt 3/4 compatibility, this compact powerhouse makes it easy to connect to high-speed copper networks using standard Cat 6 or Cat 6A cables.

Built for creative professionals and demanding workflows, the Twin10G is optimized for large file transfers, 4K+ video editing, and high-bandwidth network storage. It even supports link aggregation and transparent failover for maximum reliability.

The rugged aluminum enclosure stays cool and quiet, making it ideal for noise-sensitive work environments. And setup? A breeze — just plug it in, install the driver, and get to work.

It also features a second Thunderbolt port for daisy-chaining devices, connecting USB peripherals, or even powering an 8K display. Whether you're expanding your pro workflow or future-proofing your setup, this adapter checks all the boxes.

Key Features:
Adds two 10GBASE-T (RJ45) Ethernet ports via Thunderbolt
Supports Cat 6 (up to 55m) and Cat 6A (up to 100m) cabling
Thunderbolt 3 interface for full-speed dual-port support
Daisy-chain ready with a second Thunderbolt port
Supports transparent failover and link aggregation (Windows/Linux)
Fan-cooled, aluminum enclosure with near-silent operation
Compatible with macOS (Intel and M series), Windows, and Linux
Backward compatible with Thunderbolt 2 Macs using Apple adapter
Includes Thunderbolt cable and ThunderLok retainer
2-year warranty and lifetime tech support

What's in the Box:
Twin10G Thunderbolt Adapter
0.8-meter Thunderbolt cable
ThunderLok connector retainer clip
Universal power supply
Region-specific power cable
User documentation

Specifications

• Part Number: TWIN10GC-TB3
• Warranty: 2-year
• Form Factor: Thunderbolt 10GbE adapter
• External Connectors: Two Thunderbolt ports, Two RJ45 ports, 12V power port
• 10GbE Controller: Intel X540
• Network Support: 10GBASE-T (Cat 6A up to 100m, Cat 6 up to 55m); 1000BASE-T (Cat 5e/6/6A up to 100m)
• Link Aggregation (Teaming): Supported by Windows and Linux
• Packets: Max packet size: 15,872 bytes (jumbo frames)
• Advanced Features: Flow control, MSI, RSS, interrupt coalescing, multicast filtering, 64-bit address support, Wake-on-LAN not supported
• Stateless Offloads: TCP, UDP, IPv4 checksum offload, TSO, LRO, RSS
• Power Adapter: Universal 60W, 100–240V, 50–60 Hz, NRTL certified - PDF
• Operating Temperature: 0ºC to 35ºC (32ºF to 95ºF)
• Dimensions (WxDxH): 4 x 8.25 x 2.75 in. (10.3 x 21 x 7.3 cm)
• Weight: 2.95 lbs. (1.34 kg)
• Compliance: RoHS 3, IEC62368-1, IEC62368-2 Safety
• Product Manual - PDF
• Technical Notes: Second Thunderbolt port supports USB 3.2 Gen 1/2 with correct cable; switch/router must support and be configured for link aggregation

Compatibility

• Mac: M series and Intel with Thunderbolt 3 ports

• macOS: macOS 13+, macOS Sequoia compatible

• Windows: Computers with Thunderbolt 5 or 4 ports; Windows 11

• Linux: Computers with Thunderbolt 5 or 4 ports; Kernel 6.1, 6.12

• VMWare: Optimized to meet VMWare’s highest endorsement level

Product videos