Sonnet Twin25G Thunderbolt Dual Port 25Gb Ethernet Adapter incl. 2x SFP28
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Sonnet Twin25G
25 Gigabit Ethernet Thunderbolt adapter with two SFP28 transceivers for computers with Thunderbolt™ 4 or Thunderbolt 3
Incredible 25GbE connectivity via Thunderbolt
Many workgroups sharing storage in post-production and other high-bandwidth work environments have reached a point where 10Gb Ethernet (10GbE) no longer provides sufficient bandwidth and speed for optimal performance. The move to 25Gb Ethernet (25GbE) makes a lot of sense—it offers higher performance and often works with the same optical network infrastructure as 10GbE. For such workgroups, a cost-effective 25GbE interface is now available for Mac®, Windows®, or Linux® computers with Thunderbolt™ 4 or Thunderbolt 3 ports—Sonnet’s Twin25G™, an affordable yet powerful solution that adds incredibly fast 25GbE fiber-optic network connectivity.

The need for speed and increased network bandwidth, beyond the current 10Gb standard, has grown faster than the availability of affordable, higher-speed networking components. Extremely affordable 25Gb Ethernet switches have recently become available, but connecting a computer with Thunderbolt ports—such as the Mac Studio®—to a 25GbE infrastructure remained costly. Until now. Sonnet’s Twin25G Thunderbolt adapter is the most cost-effective and incredibly simple solution for adding incredible 25GbE network connectivity to a computer without PCIe slots.
Compact and virtually silent – Cool operation Small enough to fit easily into most workspaces, the Twin25G adapter is still large enough to ensure adequate airflow inside the chassis, allowing the temperature-controlled variable-speed fan to keep the adapter running cool and quiet at all times.
Intelligent operation – efficient performance The Twin25G card achieves high throughput with minimal host CPU load. The adapter’s intelligent controller has its own internal processing system with built-in memory to process TX/RX data using minimal CPU resources. Once data enters the queues, TX checksums are calculated on the fly during data transmission; RX checksums are quickly verified, and data is immediately transferred directly to main memory. This independent controller operation minimizes latency and prevents packet loss. The CPU is freed up to perform other tasks.
Key Features
Adds high-performance 25GbE
Mellanox ConnectX connectivity
Two SFP28 transceivers included
Backward compatibility with 10GbE infrastructure
Compatible with Mac (M2, M1, Intel), Windows, and Linux 40 Gb/s
Thunderbolt host
connection Two Thunderbolt ports—one connects to the computer; the other provides 15 W for a
Thunderbolt or USB 3 device; or for connecting an 8K display
Compact and virtually silent
2-year product warranty
Free lifetime technical support
Designed and manufactured in the USA
