Mellanox MCX4121A-ACAT ConnectX-4 NIC 25GbE 2-Port SFP28 PCIe3.0 Used
Mellanox MCX4121A-ACAT ConnectX-4 NIC 25GbE 2-Port SFP28 PCIe3.0 Used — Network Adapters supplied by Zhongxin Data. Every unit is bench-tested on our own test line before it ships, so the part number, firmware and basic function are confirmed against the part number you send us. Availability is confirmed per model, and pricing is quoted by part number. Reference: 25gbe-dual-port-network-card-used-for-mellanox-cx4-mcx4121a.
Key specifications
| Network speed | 25 Gb/s |
|---|---|
| Ports | 2 |
| Series | Mellanox |
| Condition | Used, bench-tested on our own test line |
| Availability | In stock — confirmed per part number |
| Reference | 25gbe-dual-port-network-card-used-for-mellanox-cx4-mcx4121a |
Pricing is quoted by part number. Send us the exact model and configuration, and we will confirm availability against that part number before quoting.
What we verify before it ships
- PCIe link width and negotiated speed
- Firmware version burned into the adapter
- RDMA and RoCE capability flags
- Loopback and traffic pass on every port
- SFP / QSFP cage integrity and optical link test
Check before you order
- Confirm PCIe lane width and the bracket form factor fit your server chassis.
- RDMA support requires matching software on both ends — the adapter, the driver and the fabric all have to agree.
Where this hardware typically goes
Deployments we see this model in.
Adding 100G / 200G connectivity to existing servers
RDMA offload for NCCL and HPC transport
Storage and front-end network segmentation
More in this family
Other models in the same category, all confirmed available per part number.
Mellanox MCX653105A-ECAT NIC 100GbE 1-Port HDR100 QSFP56 Used
Mellanox MCX653106A-ECAT ConnectX-6 NIC 100GbE 2-Port QSFP56 Used
Need this part number quoted?
Send the model, the configuration and the quantity. We confirm availability against that part number and quote it directly.
Ask on WhatsApp