Key Features
Compatibility
Product Description
Incredible 25GbE Connectivity Over Thunderbolt
Many post-production shared storage workgroups and other bandwidth-intensive workflows have reached a point where 10Gb Ethernet (10GbE) does not provide enough bandwidth and speed for optimum performance. Stepping up to 25Gb Ethernet (25GbE) makes a lot of sense — it offers greater performance and often works with the same optical network infrastructure as 10GbE. For these workgroups, there is now a cost-effective 25GbE interface for your Mac®, Windows®, or Linux® computer with Thunderbolt™ 4 or Thunderbolt 3 ports — Sonnet’s Twin25G™, an affordable yet powerful solution for adding incredibly-fast fiber optic 25GbE network connectivity.
Affordable 25GbE Networking – Make the Switch
Postproduction workflows’ needs for speed and increased network bandwidth beyond the current 10Gb standard have increased more quickly than the availability of affordable higher speed network components. Recently, extremely affordable 25Gb Ethernet switches have become available, but connecting a computer with Thunderbolt ports — such as a Mac Studio® — to a 25GbE infrastructure has remained expensive. Until now. Sonnet’s Twin25G Thunderbolt adapter is the most cost-effective and powerfully simple solution for adding incredible 25GbE network connectivity to your computer without PCIe card slots.
Compact and Nearly Noiseless – Cool Running
Small enough to easily fit in most workspaces, the Twin25G adapter is still large enough to support proper airflow inside its case to enable the adapter’s temperature-controlled, variable-speed fan to keep the adapter always running cool and quiet.
Intelligent Operation – Efficient Performance
The Twin25G 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.
All the Right Connections – 40Gbps Thunderbolt Cable and ThunderLok Included
Sonnet includes a Thunderbolt cable that supports Thunderbolt’s full 40Gbps bandwidth, and is fully compatible with Thunderbolt 4 and Thunderbolt 3 computers. 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.
Key Features
- Adds High-performance 25GbE Connectivity
- Two SFP28 Transceivers Included
- Backward Compatible with 10GbE Infrastructure
- Mac, Windows, and Linux Compatible
- 40Gbps Thunderbolt Device
- Two Thunderbolt Ports – One Port Connects to Computer; Second Port Provides 15W for a Thunderbolt or USB 3 Device; or to Connect to an 8K Display
- Compact and Nearly Noiseless
- 2-year Product Warranty
- Free Lifetime Customer Technical Support
- Designed and Made In the USA
Package Contents
Twin25G Thunderbolt Adapter
Two 25GBASE-SR (short-range) SFP28 transceivers (installed)
Universal power adapter
Region-specific power cable
0.8- meter Thunderbolt cable
ThunderLok-A connector lock
Documentation
Specifications
- Part Number: TWIN25G-TB
- Warranty: 2-year
- Form Factor: Thunderbolt 25GbE adapter
- External Connectors: Two Thunderbolt ports (second port supports a Thunderbolt peripheral, USB device, or a display), Two SFP28 sockets with two 25GBASE-SR optical transceivers, 12V power port
- 25GbE Controller: Mellanox ConnectX
- Network Support: 25Gb/s, 10Gb/s
- Teaming (Link Aggregation): Not Supported
- Packets: Max packet size: 9000 bytes (jumbo frames)
- Data Rates Supported per Port: 25Gb/s, 10Gb/s
- Advanced Features: Flow control, MSI, RSS, multicast filtering, 64-bit address support, Wake-on-LAN not supported
- Stateless Offloads: TCP, UDP, IPv4 checksum offload; TRO (TCP Receive Offload)
- 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: Adapter + Power Adapter: 2.3 lbs (1.04 kg); Complete Package: 4.1 lbs (1.86 kg)
- Compliance: RoHS 3, IEC62368-1 & IEC62368-2 Safety
- Product Manual: PDF
Compatibility
-
Mac Compatibility
Mac (M series)
Mac (Intel) with Thunderbolt 3 ports
macOS 14+
macOS Tahoe compatible -
Windows Compatibility
Windows computer with Thunderbolt 5 or 4 ports
Windows 11 -
Linux Compatibility
Linux computer with Thunderbolt 5 or 4 ports
Linux Kernel 6.1, 6.12
Product videos
Shipping, Returns & VAT
- Free UK Shipping: Delivered in approx. 2 working days
- Express Options: Faster methods available at checkout
- Free Shipping to Ireland: For orders over £100.00
- International Delivery: Times vary by destination; shipped via FedEx or DHL
- 30-Day Returns: Return within 30 days from order date
- UK, Ireland and EU Customers: Free return label provided
- Full Return Policy: Read Here
- Full Shipping Details: Read Here
VAT & Duties Information
UK & EU Customers: The price shown on our website is the final price you pay. No additional VAT, customs duties, or import fees will be charged upon delivery.
Orders are dispatched from Northern Ireland, allowing us to serve customers across the United Kingdom and the European Union without unexpected import charges.
Non-UK and non-EU destinations: Local taxes, customs duties, and import fees may apply and are the responsibility of the recipient.
Payment
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Customer Service
Email and chat available 24/7
Free number UK: 08001954072
International: +442838341148
Phone Line Opening Hours
- Monday - Friday: 09:00-17:00
