Manufacturer reference image. Included components and condition follow the selected item.
网络设备
NVIDIA ConnectX-4 Lx MCX4121A-ACAT
- 形态
- Low-profile PCIe card
- 接口
- SFP28
下单前确认
- 确认准确的 SKU、料号、规格选项与数量。
- 确认主机平台、端口、电气接口与固件兼容要求。
- 付款前确认库存、交期、目的地与适用售后条款。
| 封装类型 | Low-profile PCIe card |
|---|---|
| family | ConnectX-4 Lx |
| category | ethernet_nic |
| 接口 | SFP28 |
| protocols | Ethernet |
| Port count | 2 |
| 料号 | MCX4121A-ACAT |
| Host interface | PCIe 3.0 x8 |
| Speed or compute | 25 GbE |
| Lifecycle literal | End of Life |
| Ports or connector | 2 SFP28 |
| Airflow lfm passive | 300 |
| Canonical order code | 900-9X4B0-0053-0T1 |
| Card dimensions (mm) | 68.9 x 142.24 |
| Maximum power w passive | 11.6 |
| Typical power w passive | 9.6 |
| Ethernet supported rates (Gb/s) | 1, 10, 25 |
| Operating temperature (degrees C) | 0 to 55 |
产品问答
Is ACAT the 10 GbE XCAT version?
No. MCX4121A-ACAT is the dual-SFP28 1/10/25 GbE configuration; XCAT is a separate 10 GbE ordering variant.
What does its end-of-life listing mean for a replacement?
NVIDIA lists the product line and exact ordering entries as end of life. This is lifecycle information, not proof that an individual card is faulty. Verify current software compatibility, support needs and unit condition.
Is PCIe 3 x8 the expected host interface?
Yes. The exact specification gives PCIe Gen 3, eight lanes, with earlier-generation compatibility. Record the actual negotiated link state in the target server.
What power does the passive-cable table list?
9.6 W typical and 11.6 W maximum with passive cables. Active cables have a separate power condition; do not reuse the passive maximum unchanged.
Does the ACAT suffix establish secure firmware?
The introduction lists secure firmware for ACST as a separate variant. Do not infer that ACAT has the same secure-firmware or UEFI configuration merely from the shared board family.
What should be included in an acceptance test?
Confirm identity/PSID, driver and firmware compatibility, both port links at the intended rate, error counters, airflow and workload throughput. Test the system with the intended SFP28 interconnects rather than an unrelated cable.