HPE NIC 10GB/25GBE SFP28 OPC 4-PORT

For HPE ProLiant Gen10 Plus and newer servers, the P41881-001 OCP 3.0 network adapter delivers four independent 10/25GbE SFP28 ports on a single small form factor card. Unlike standard PCIe NICs that consume a full‑height slot, this OCP mezzanine design frees up valuable chassis space while providing line‑rate throughput for virtualization, software‑defined storage, and high‑performance computing clusters. Built on the Broadcom BCM57416 controller, it offloads CPU‑intensive tasks such as RDMA over Converged Ethernet (RoCE v2), TCP/IP, iSCSI, and FCoE, so applications get more processing power. SR‑IOV, VXLAN, NVGRE, and Geneve offloads ensure efficient VM‑to‑VM communication and overlay network performance.

Highlights

• Four SFP28 ports, each supporting 10GbE or 25GbE speeds
• OCP 3.0 Small Form Factor (SFF) for space‑constrained servers
• Broadcom BCM57416 controller with hardware offloads for RoCE v2, TOE, iSCSI, and FCoE
• PCIe 3.0 x8 host interface for ample bandwidth
• Advanced virtualization: SR‑IOV, VXLAN, NVGRE, Geneve
• NC‑SI sideband management for remote monitoring and firmware updates
• Jumbo frame support up to 9 KB
• PXE boot and link aggregation (teaming) support

In daily use

Installation is straightforward: the card snaps into the OCP 3.0 slot on the server motherboard, and the four SFP28 cages accept standard 10G/25G transceivers or direct‑attach copper cables (not included). Link/activity LEDs on each port give immediate status indication. In a VMware ESXi or Linux KVM environment, SR‑IOV allows multiple VMs to share a single physical port with near‑native performance, while RoCE v2 enables low‑latency RDMA for storage protocols like NVMe‑oF. For Windows Server deployments, the included driver set supports teaming and VLAN tagging out of the box. The NC‑SI interface lets administrators update firmware and monitor health through the server’s baseboard management controller, even when the host OS is offline.

Full specifications

• Brand: HPE
• Model: P41881-001
• Product type: Network interface card
• Form factor: OCP 3.0 Small Form Factor (SFF)
• Host interface: PCIe 3.0 x8
• Interface type: SFP28 (4 ports)
• Data transfer rate: 10/25 Gigabit Ethernet per port
• Controller: Broadcom BCM57416
• Networking standards: IEEE 802.3ae (10GbE), IEEE 802.3by (25GbE), IEEE 802.1Q (VLANs), IEEE 802.1p (QoS)
• Offload capabilities: RoCE v2, TCP/IP Offload Engine (TOE), iSCSI, FCoE
• Virtualization features: SR‑IOV, VXLAN, NVGRE, Geneve offload
• Jumbo frame support: Up to 9 KB
• PXE boot support: Yes
• Link aggregation: Yes (Teaming)
• Full duplex: Yes
• LED indicators: Link/Activity per port
• Management interface: NC‑SI
• Compatible operating systems: Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, Ubuntu, VMware ESXi, Citrix XenServer
• Compatibility: HPE ProLiant Gen10 Plus servers and newer
• Media type: Requires SFP28 transceivers or DAC cables (not included)

Final note

This adapter is an ideal choice for dense server environments where every PCIe slot counts. Its OCP form factor, combined with 100 Gbps aggregate bandwidth and comprehensive offloads, makes it a future‑proof investment for modern data centers.