The Sonnet Twin25G T5 is a dual-port 25GbE Thunderbolt 5 adapter that brings 25GbE optical networking to systems without PCIe slots.
The adapter ships with two 25GBASE-SR SFP28 transceivers and a Thunderbolt 5 cable for immediate connection to multimode fiber networks.
It supports 10GbE backward compatibility, includes a ThunderLok connector retainer clip, and uses a temperature-controlled fan for cool, quiet operation.
£ please call for the price
The Sonnet Twin25G T5 Thunderbolt 5 Adapter adds dual 25GbE optical networking to computers that lack PCIe expansion, delivering high-bandwidth connectivity over Thunderbolt or USB4 ports.
Designed for multimedia and bandwidth-intensive workflows, the adapter ships with two SFP28 transceivers and a Thunderbolt 5 cable to simplify installation and bring 25GbE performance to Macs, Windows, and Linux systems.
Twin25G T5 provides dual optical 25GbE ports through SFP28 transceivers, giving systems without PCIe slots access to 25GbE networks and shared storage.
The adapter includes two 25GBASE-SR SFP28 transceivers so it can be connected to multimode fiber infrastructure immediately after installation.
The adapter also supports 10GbE to allow integration with existing 10GbE switches and storage until a full 25GbE upgrade is completed.
Twin25G T5 features two Thunderbolt 5 ports: one to connect to the host computer and a second downstream port that provides 15W for a Thunderbolt or USB device or to connect an 8K display.
The Thunderbolt 5 interface delivers 80 Gbps of bi-directional data speed and up to 120 Gbps for higher display bandwidth to support high-throughput network and display requirements.
The adapter’s smart controller with onboard memory processes TX/RX data with minimal host CPU load, performing on-the-fly TX checksum computation and fast RX checksum verification to minimise latency and avoid packet drops.
Sonnet designed the enclosure to provide adequate internal airflow and a temperature-controlled, variable-speed fan so the adapter runs cool and nearly noiseless for desktop use.
Setup requires installing the provided driver, connecting the included Thunderbolt 5 cable, inserting the supplied SFP28 modules, and configuring network settings in the host OS; a ThunderLok connector retainer clip is included to secure the Thunderbolt cable.
Twin25G T5 supports Apple M series Macs and Intel Macs with Thunderbolt 3 ports, and it supports Windows and Linux computers with Thunderbolt 5, Thunderbolt 4, or USB4 ports.
| Product | Sonnet Twin25G T5 Thunderbolt 5 Adapter |
| Network Ports | Dual optical 25GbE SFP28 ports |
| Included Transceivers | Two 25GBASE-SR SFP28 transceivers |
| Backward Compatibility | Supports 10GbE |
| Thunderbolt Ports | Two Thunderbolt 5 ports |
| Secondary Port Capability | Provides 15W for a Thunderbolt or USB device; can connect an 8K display |
| Thunderbolt 5 Bandwidth | 80 Gbps bi-directional; up to 120 Gbps for higher display bandwidth |
| Cable Included | Thunderbolt 5 cable included |
| Connector Retainer | ThunderLok Thunderbolt cable connector retainer clip included |
| Cooling | Temperature-controlled, variable-speed fan for cool, nearly noiseless operation |
| Controller | Smart controller with onboard memory to minimise host CPU load and reduce latency |
| Compatibility (Mac) | Supports all M series Macs and Intel Macs with Thunderbolt 3 ports |
| Compatibility (Windows) | Supports Windows computers with Thunderbolt 5 or 4, or USB4 ports |
| Compatibility (Linux) | Supports Linux computers with Thunderbolt 5 or 4, or USB4 ports |
Generally, next working day delivery services (UK Mainland) are available on standard Sonnet Technology Delivery orders placed before 2 pm (subject to stock availability).
Non-timed deliveries should be delivered between 9 am and 6 pm.
Orders placed after 2 pm on Fridays and weekends will be processed as normal the following Monday.
Orders placed on Bank Holidays will be processed the next working day.
If urgent, please call one of our helpful account managers so they may double check everything for you, enabling you to place your order with confidence.
Please note: these product details are for guide purposes only, and may contain errors.
We always recommend double-checking the product specs and features on the the manufacturer website, or contact us if unsure before ordering.
