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- Description
- Specifications
Lenovo option 4XC7A08237 is the ThinkSystem Broadcom 57414 10/25GbE SFP28 2-port OCP Ethernet Adapter. Lenovo lists two feature codes for it, B5SZ and BN2T, depending on the server it is configured in. It is an OCP 3.0 card with two empty SFP28 cages, based on the Broadcom BCM57414 controller with a PCIe 3.0 x8 host interface.
Each port connects to a 10 Gb or 25 Gb switch, or several adapters can share a 100 Gb switch port through a 4:1 breakout cable. Lenovo states that mixing 10 Gb and 1 Gb, or 25 Gb and 1 Gb, transceivers is supported, but mixing 10 Gb and 25 Gb transceivers on this adapter is not. Features include RoCEv2, SR-IOV with 128 virtual functions, NPAR with up to 16 physical functions and TruFlow flow processing. Lenovo lists 10 Gb SR optics such as 46C3447 among supported transceivers.
The PCIe version is 4XC7A08238 (feature B5T0 or BK1H), and a single-port 57412 PCIe card is also listed. For four ports and mixed 10/25 Gb optics, the Broadcom 57504 OCP adapter 4XC7A80567 is the alternative.
Lenovo lists the OCP adapter for V3 servers (SR630 V3, SR650 V3, SR635 V3, SR655 V3, SR645 V3, SR665 V3, SR850 V3, SR860 V3, SR685a V3, SE455 V3), V4 servers (SR630 V4, SR650 V4, SR650a V4), V2 servers (SR630 V2, SR650 V2, SR670 V2, SR850 V2, SR860 V2) and the SR635, SR655, SR645 and SR665. Confirm an OCP 3.0 slot is free and plan transceivers at one speed per adapter.
| 4XC7A08237 Specs | |
| Part number | 4XC7A08237 |
| Feature codes | B5SZ / BN2T |
| Type | Ethernet adapter, OCP 3.0 |
| Controller | Broadcom BCM57414 |
| Ports | 2x SFP28, empty cages |
| Speeds | 10 / 25 GbE (no 10/25 transceiver mixing) |
| Host interface | PCIe 3.0 x8 |
| Virtualization | NPAR (16 PFs), SR-IOV (128 VFs) |
| RDMA | RoCEv2 |
| PCIe version | 4XC7A08238 (B5T0 / BK1H) |
| Status | Current (Lenovo Press) |