Allows you to add two SFP28 fiber network ports up to 25 Gbps to a computer equipped with a compatible USB4 or Thunderbolt port.
Please note, if you are using USB4, make sure that your ports respect thunderbolt performance and are 40G, because USB4 20G is found on many PCs.

Compatibility: 
Compatible with computers with a compatible USB4 40 Gbps or Thunderbolt 3, 4 or 5 port.
Plug and Play operation on Mac.
Support Windows 10 and Windows 11, Linux.

Technical description: 
USB4 40Gbps host interface, or Thunderbolt 3, Thunderbolt 4 and Thunderbolt 5.
2 USB Type C ports, 1 USB4 upstream port for linking with the host computer and 1 USB4 downstream port for daisy-chaining compatible peripherals.
Daisy Chain function allows you to cascade compatible USB4 or Thunderbolt devices.
Downlink port output power up to 60W.
Network interfaces 2 SFP28 ports.
Mellanox Connect X4 Lx (CX4421A) high-performance networking chipset.
Supported network speeds 25Gbps and 10Gbps with auto-negotiation.
Full Duplex mode support.
Support for Jumbo Frames up to 9 KB.
Actual throughput announced around 2.75 GB/s.
LED status indicator (link, speed).
Powered by external mains adapter provided.
Cooling by internal forced ventilation and aluminum housing.
Dimensions 152.8x95x29mm, weight 380g.