Description
Dell 20NJD Mellanox ConnectX-4 CX4121C Dual-Port 25GbE Network Adapter
The Dell 20NJD Mellanox ConnectX-4 CX4121C is a high-performance dual-port Ethernet network adapter designed for enterprise servers, virtualization platforms, storage environments, and high-bandwidth data center applications. Featuring two SFP28 ports with support for up to 25GbE connectivity per port, this low-profile PCI Express adapter provides high-speed networking for demanding server and storage workloads.
Manufacturer: Dell / Mellanox
Dell Part Number: 20NJD
Controller Family: Mellanox ConnectX-4
Model: CX4121C
Network Ports: 2 × SFP28
Maximum Network Speed: 25GbE per port
Bracket: Low Profile
Key Features
- Mellanox ConnectX-4 Ethernet controller technology
- Dell part number 20NJD
- CX4121C adapter model
- 2 × SFP28 network ports
- Up to 25GbE connectivity per port
- Dual-port high-bandwidth network configuration
- PCI Express host interface
- Low-profile server bracket
- Designed for enterprise server and data center environments
- Ideal for virtualization, storage networking, cloud infrastructure, and high-speed server connectivity
Included
- 1 × Dell 20NJD Mellanox ConnectX-4 CX4121C Network Adapter
- 1 × Low-Profile Bracket
Important Notes
- Photos are for reference only.
- SFP28 transceivers are not included unless specifically stated or pictured.
- Fiber cables, DAC cables, drivers, software, and additional accessories are not included unless specifically stated or pictured.
- 25GbE operation requires compatible SFP28 optics or DAC cabling and compatible network infrastructure.
- Please verify Dell part number 20NJD, CX4121C model, bracket size, operating system, server, and network compatibility before purchasing.
Dell Part Number: 20NJD