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Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers
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Sonnet Twin25G Dual-port 25GbE PCIe Card with Two Included SFP28 Transceivers

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Product SKU: G25E-2X-E3
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Twin25G PCIe Card. Dual-port 25 Gigabit Ethernet PCIe Card with Two SFP28 Transceivers

Incredible 25GbE Connectivity
Many bandwidth-intensive workflows — including post-production shared storage workgroups — have reached a point where 10Gb Ethernet does not provide sufficient bandwidth and speed for optimum performance. Upgrading to 25Gb Ethernet is the smart choice — it offers greater performance and works with the same optical network infrastructure as 10GbE. Step up to the Sonnet Twin25G™ PCIe Card, an affordable and powerful solution for adding incredibly-fast fiber optic 25GbE network connectivity.

Affordable 25GbE Networking – Make the Switch
Mac users need faster network speeds and increased bandwidth for postproduction workflows. Recently, 25Gb Ethernet switches have become more affordable, but connecting a 2019 Mac Pro® to a 25GbE infrastructure has been expensive. Sonnet's Twin25G PCIe Card is a cost-effective and simple solution for adding 25GbE network connectivity to not only Mac Pro, but also to any computer with PCIe slots.

Perfect Companion for Echo Thunderbolt Expansion Systems
Use a free slot in a Sonnet multi-slot Echo Thunderbolt expansion system to add 25Gb Ethernet to your computer without card slots.

Storage Environments – Efficient NVMe Storage Access
Storage Environments NVMe storage devices are gaining popularity by offering very fast storage access. Sonnet Twin25G offers performance enhancements not only by delivering higher network speed, but also by providing NVMe over Fabric (NVMe-oF) target offloads, enabling very efficient NVMe storage access with no CPU intervention, thus improving performance and reducing latency. Compared to multi-fabric teamed 10G networks, a consolidated 25G storage network achieves significant cost and performance advantages with fewer cables and switch ports, which also lowers power requirements.

Includes Two Mounting Brackets – Install Card Into Any PCIe Slot
Twin25G PCIe Card is packaged with both full-height and low-profile mounting brackets, enabling installation of the card into any PCIe slot.

Install and Connect – Simple Installation
Simply install the Twin25G PCIe Card into a PCIe slot in your computer or Sonnet Thunderbolt PCIe card expansion system, install a driver, install the included SFP28 modules, and then connect the card to the network switch or directly to 25GbE-enabled storage. Configure the adapter’s settings through the macOS Network control panel, Windows Device Manager, or Linux command line (or graphical utility).

Key Features

  • Adds High-performance 25GbE Connectivity
  • Two SFP28 Transceivers Included
  • Backward Compatible with 10GbE Infrastructure
  • Mac, Windows, and Linux Compatible (See Product Page Tech Specs for Latest Compatibility Info)
  • Great for Use in Thunderbolt Expansion Systems
  • 2-year Product Warranty
  • Free Lifetime Customer Technical Support
  • Designed and Made In the USA

Package Contents

  • Twin25G PCIe Card
  • Two PCIe mounting brackets
  • Documentation
  • Part Number: G25E-2X-E3
  • Warranty: 2-year
  • Form Factor: Low-profile PCIe 3.0 x8 card
  • PCIe x4 slot supports: one port at full bandwidth
  • PCIe x8 slot supports: two ports at full bandwidth
  • External Connectors: Two SFP28 optical transceivers
  • 25GbE Controller: Mellanox ConnectX
  • Network Support: 25Gb/s, 10Gb/s
  • Teaming (Link Aggregation):
    • macOS: Link Aggregation provides balanced network traffic and automatic failover
    • Windows 11* and 10*, Windows Server, and Linux: Teaming doubles transfer speeds up to 50Gb/s* Get Sonnet software to create a Team in Windows 11 or 10
  • Packets: Maximum packet size: 9000 bytes (jumbo frames)
  • Advanced Features:
    • Flow control support
    • MSI (Message Signaled Interrupts)
    • RSS (Receive-Side Scaling)
    • Multicast filtering
    • 64-bit address support for systems using more than 4GB of physical memory
    • Wake-on-LAN not supported
  • Stateless Offloads:
    • TCP, UDP, and IPv4 checksum offloading
    • TSO (TCP Segmentation Offload, AKA Large Send Offload)
    • TRO (TCP Receive Offload)
  • Compliance: RoHS 3 (Directive 2015/863), IEC62368-1 and IEC62368-2 Safety
  • Product Manual: Click PDF
  • Mac Compatibility:
    • Mac Pro 14,8 (2023)
    • Mac Pro 7,1 (2019)
    • macOS 13+
    • macOS Sonoma compatible


  • Windows Compatibility:
    • Windows 11 and 10
    • Windows Server 2022, 2019


  • Linux Compatibility:
    • Linux Kernel 5.0+


  • Thunderbolt PCIe Expansion System Compatibility:
    • Mac computer (M series and Intel) with Thunderbolt port via a Thunderbolt to PCIe card expansion system
    • Windows computer with Thunderbolt port via a Thunderbolt to PCIe card expansion system
    • Linux computer with Thunderbolt 4 port via a Thunderbolt to PCIe card expansion system

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