HPE Synergy 4820C 10/20/25Gb Converged Network Adapter

876449-B21 is the HPE Synergy 4820C 10/20/25Gb Converged Network Adapter, a mezzanine adapter for HPE Synergy compute modules. HPE gives 877647-001 as its replacement part number, described as the Mezzanine C G3 2p 25GbE adapter.

HPE rates it at two ports, each at 10, 20 or 25Gb, on a Marvell QL45604 controller with a PCIe 3.0 x16 bus and 14 W maximum power. Operating range is 5 to 70 degrees C and 10% to 90% non-condensing humidity.

Offloads include hardware iSCSI and FCoE, along with RoCE v1 and v2 and iWARP for RDMA, DPDK, SR-IOV, IEEE 1588 PTP, and NVMe-oF readiness (NVMe/TCP on Linux only). There are 8 Synergy physical functions per port. HPE's note for the 4820C and 6820C is that a NIC used for DPDK must have its storage personality disabled, because DPDK and storage modes cannot run together.

HPE lists the 4820C for the Synergy 660 Gen10 and 480 Gen10, Gen10 Plus and Gen11 compute modules. It works with the Virtual Connect SE 40 Gb F8 module, the Synergy 40 Gb F8 switch module, the 20 Gb and 10 Gb interconnect link modules, the 10 Gb pass-thru module, the Mellanox SH2200 switch module, the VC SE 100 Gb F32 module (867796-B21) and the 50 Gb interconnect link module.

Its siblings are the 6820C 25/50Gb Converged Network Adapter (P02054-B21), which uses the same Marvell controller at 25/50Gb per port, and the 6310C 25/50Gb Ethernet Adapter (P64724-B21), a Broadcom BCM57504 card on PCIe 4.0 x16. Related Synergy parts: HPE interface and network cards and HPE Synergy 5330C 32Gb Fibre Channel host bus adapter 870828-B21.