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NVIDIA
Item#:
9SIC2AHKK45284
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NVIDIA MCX4121A-ACAT ConnectX-4 Lx EN Adapter Card 25GbE - PCI Express 3.0 x8 - 2 Port(s) - Optical Fiber - 25GBase-X - SFP - Plug-in Card | MCX4121A-ACAT
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1/10 Gb/s speeds
Single and dual-port options
Virtualization
Low latency RDMA over Converged Ethernet (RoCE)
Multi-Host technology connects up to 4 independent hosts
CPU offloading of transport operations
Application offloading
PeerDirect communication acceleration
Hardware offloads for NVGRE, VXLAN and GENEVE encapsulated traffic
End-to-end QoS and congestion control
Hardware-based I/O virtualization
RoHS compliant
ODCC compatible
Various form factors available
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Overview
Specs
Reviews
MAIN OVERVIEW FEATURES: Host Interface: PCI Express 3.0 x8Total Number of Ports: 2Expansion Slot Type: SFPMedia Type Supported: Optical FiberForm Factor: Plug-in CardEnvironmentally Friendly: YesEnvironmental Certification: RoHS-6,WEEE
Learn more about the NVIDIA MCX4121A-ACAT
Model
Brand
Mellanox
Model
MCX4121A-ACAT
Details
Interface
PCI Express 3.0 x8
Features
Features
Product Type:25Gigabit Ethernet Card
Additional Information
First Listed on Newegg
August 25, 2025
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
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Return Policies
Return for refund within: 30 days
Return for replacement within: 90 days
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