Lenovo NVIDIA Mellanox CX4121A ConnectX-4 Lx Dual Port SFP28 25GbE PCIe 3.0 x8 Network Interface Card (NIC) 01GR253
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SKU 01GR253
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- Specifications
- Description
| Manufacturer Part Number | 01GR253 |
| Manufacturer | Mellanox |
| Condition | Refurbished |
| Standard Warranty | 90 Day Replacement Warranty |
| Item Category | Network Interface Cards (NICs) |
| Model | CX4121A |
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Lenovo NVIDIA Mellanox ConnectX-4 Lx CX4121A Dual Port SFP28 25GbE PCIe 3.0 x8 Network Interface Card (NIC) 01GR253
The Lenovo NVIDIA Mellanox ConnectX-4 Lx CX4121A (01GR253) is a high-performance dual-port Ethernet network adapter designed for cloud computing, data centers, virtualization platforms, hyper-converged infrastructure, and software-defined storage environments. Based on the Mellanox ConnectX-4 Lx EN architecture and OEM model MCX4121A-ACAT, this Ethernet-only adapter delivers outstanding performance, low latency, and advanced hardware acceleration while maintaining exceptional power efficiency.
Designed with a PCI Express 3.0 x8 interface, the ConnectX-4 Lx supports up to 25GbE per port and offers seamless backward compatibility with existing 10GbE infrastructures. Advanced offload technologies help reduce CPU utilization and improve application responsiveness across enterprise workloads.
Key Features
- Lenovo Part Number: 01GR253
- Alternate Part Number: 01GR250
- Mellanox Model: CX4121A
- OEM Model: MCX4121A-ACAT
- Mellanox ConnectX-4 Lx EN Controller
- Dual-Port SFP28 Connectivity
- Up to 25GbE Per Port
- Supports 10GbE and 25GbE Networks
- PCI Express 3.0 x8 Interface
- Ethernet-Only Architecture
- RoCE v1 & RoCE v2 RDMA Support
- SR-IOV Virtualization Support
- VXLAN, NVGRE & Geneve Offloads
- IEEE 1588v2 Precision Time Stamping
- Low Power Consumption (~9.47W)
- Passive Cooling Design
- Secure PXE and UEFI Boot Support
Technical Specifications
General Information
- Manufacturer: Lenovo (OEM NVIDIA Mellanox)
- Lenovo Part Number: 01GR253
- Alternate Part Number: 01GR250
- Mellanox Base Model: CX4121A
- OEM Reference Model: MCX4121A-ACAT
- Controller: Mellanox ConnectX-4 Lx EN
- Device Type: Ethernet Network Interface Card (NIC)
- Cooling: Passive Heatsink
- Typical Power Consumption: 9.47 Watts
- Form Factor: Low Profile PCIe Adapter
Host Interface
- PCI Express 3.0 x8
- Compatible with PCIe x8 and x16 Slots
- Enterprise Server Ready
- Low-Profile Design
Port Configuration
- Dual-Port Adapter
- 2 x SFP28 Ports
- Ethernet Protocol Only
- Supports SFP28 DAC Cables
- Supports Active Optical Cables (AOC)
- Supports SR and LR Optical Transceivers
Network Performance
Ethernet Speeds
- 25 Gigabit Ethernet (25GbE)
- 10 Gigabit Ethernet (10GbE)
- Auto-Negotiation Support
Network Acceleration Technologies
- RDMA over Converged Ethernet (RoCE v1)
- RDMA over Converged Ethernet (RoCE v2)
- Single Root I/O Virtualization (SR-IOV)
- Up to 256 Virtual Functions (VFs)
- Up to 16 Physical Functions (PFs)
- VXLAN Offload
- NVGRE Offload
- Geneve Offload
- TCP/UDP/IP Checksum Offload
- Large Send Offload (LSO)
- Large Receive Offload (LRO)
- Receive Side Scaling (RSS)
- Transmit Side Scaling (TSS)
- Jumbo Frames up to 9600 Bytes
- IEEE 1588v2 Hardware Time Stamping
Virtualization & Cloud Features
The ConnectX-4 Lx is optimized for:
- VMware Virtualization
- Microsoft Hyper-V
- KVM Virtualization
- OpenStack Deployments
- Hyper-Converged Infrastructure
- Software-Defined Storage
- Private Cloud Platforms
- Public Cloud Integrations
Boot & Management Features
- Secure PXE Boot
- UEFI Boot Support
- Remote Deployment Capabilities
- Enterprise Network Management Integration
Compatible Operating Systems
- Microsoft Windows Server
- Windows 10
- Windows 11
- Red Hat Enterprise Linux (RHEL)
- CentOS
- Rocky Linux
- Ubuntu Linux
- SUSE Linux Enterprise Server (SLES)
- VMware ESXi
- Linux OFED Drivers
Compatible Servers
Lenovo ThinkSystem
- SR635
- SR655
- ThinkSystem Platforms with PCIe 3.0 x8/x16 Slots
Additional Enterprise Platforms
- Dell PowerEdge Servers
- HPE ProLiant Servers
- Supermicro Servers
- Lenovo System x Servers
- Custom Enterprise Servers
- Whitebox Server Platforms
Compatible Transceivers & Cables
SFP28 Optical Modules
- 25GBASE-SR
- 25GBASE-LR
- NVIDIA Mellanox Compatible SFP28 Modules
- Lenovo Qualified SFP28 Transceivers
Cable Types
- SFP28 Direct Attach Copper (DAC)
- SFP28 Active Optical Cable (AOC)
- Fiber Optic Connections
- Twinax Copper Cables
Ideal Applications
- Enterprise Data Centers
- Server Virtualization
- Cloud Infrastructure
- Hyper-Converged Infrastructure
- High-Speed Storage Networks
- Software-Defined Storage
- Database Clusters
- Container Platforms
- AI Infrastructure
- Edge Computing
- Backup Networks
- High-Performance Ethernet Environments