Compatibility

Mac Compatibility

• Mac Pro 14,8 (2023)
• Mac Pro 7,1 (2019)
• macOS 15+; compatible with macOS 27

Windows Compatibility

• Windows computer with an available PCIe slot
• Windows 11 25H2+
• Windows Server 2025

Linux Compatibility

• Linux computer with an available PCIe slot
• Supported Linux kernel, 6.6 or later

Thunderbolt Expansion System Compatibility

• Thunderbolt expansion system with an available PCIe slot

Hardware

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 sockets (with two short-range SFP28 optical transceivers)

25GbE Controller

• Mellanox ConnectX

Network Support

• 25 Gbps, 10 Gbps

Teaming (Link Aggregation)

• macOS

• Link Aggregation provides balanced network traffic and automatic failover

• Windows 11*, Windows Server, and Linux

• Teaming doubles transfer speeds up to 50Gb/s
  * Download Sonnet software to create a Team in Windows 11

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)

Package Contents

• Twin25G PCIe Card
• Two short-range SFP28 optical transceivers (installed on PCIe card)
• Two PCIe mounting brackets (full-height and low-profile)
• Documentation