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Lenovo lists 4XC7A08297 (feature codes B96F and BK1J) as the ThinkSystem Broadcom 57508 100GbE QSFP56 2-Port PCIe 4 Ethernet Adapter. It is based on the two-port Broadcom BCM57508 controller and uses a PCIe 4.0 x16 host interface in a low-profile card.
The two QSFP56 cages arrive empty and take a transceiver, a direct-attach copper cable or an active optical cable. The adapter runs 100Gb/s on both ports or 200Gb/s on a single port, and in the 200GbE case Lenovo says transceivers are not currently supported. 25Gb and 10Gb links need the Mellanox 100G QSFP28 to 25G SFP28 cable adapter, 4G17A10853 (feature code B306).
Lenovo lists PXE and UEFI network boot, with Wake-on-LAN not supported, and iSCSI boot only through server UEFI. Other listed features are jumbo frames up to 9600 bytes, 802.3ad/802.1AX link aggregation, 802.1q VLAN tagging, IEEE 1588 time sync, DPDK support, and 100M packets per second.
For 100Gb optics Lenovo lists 4M27A67042 (Lenovo 100Gb SR4 QSFP28, BFH1), 7G17A03539 (100GBase-SR4 QSFP28, AV1D) and 4TC7A86257 (100GBase-SR4 QSFP28, BVA4), and 100G QSFP28 active optical cables from 1m to 20m.
The OCP 3.0 version of this adapter is 4XC7A08243 (BPPX). The PCIe option ships with a full-height (3U) bracket attached and a low-profile (2U) bracket that can be substituted.
For a different 100GbE adapter, see the Lenovo 00MM960 Mellanox ConnectX-4 2x100GbE EDR IB QSFP28 VPI adapter or browse the Lenovo interface card category.
| Option part number | 4XC7A08297 |
| Feature codes | B96F / BK1J |
| Controller | Broadcom BCM57508 (2-port) |
| Ports | 2 x QSFP56 (2x100GbE or 1x200GbE) |
| Host interface | PCIe 4.0 x16 |
| Form factor | PCIe low profile |
| Boot | PXE, UEFI |
| Jumbo frames | up to 9600 bytes |
| 25Gb/10Gb option | Mellanox 100G QSFP28 to 25G SFP28 cable adapter 4G17A10853 |
| OCP version | 4XC7A08243 |