374931-001 is an HP replacement/spare assembly for the NC571C dual-port 4x InfiniBand fabric adapter, providing two 4x InfiniBand ports through a PCI Express x8 interface. HP service documentation identifies 374931-001 as the PCI Express dual-port 4x InfiniBand adapter board, while HPE part references associate it with option 376160-B21 and assembly 374301-001.
- Part Number: 374931-001
- Manufacturer: HP / Compaq
- Product: NC571C Dual-Port 4x InfiniBand Fabric Adapter
- Ports: 2 × 4x InfiniBand
- Data Rate: 10Gbps per 4x InfiniBand port
- Interface: PCI Express x8
- Technology: InfiniBand 4x
- Application: High-performance computing, server clustering, low-latency fabric networking
- Compatible Systems: Selected HP ProLiant servers with compatible PCI Express slots, including the DL140 G2 and DL145 G2.
- Related Option: 376160-B21 — HP NC571C PCI Express Dual-Port 4x Fabric Adapter
- Related Assembly: 374301-001 — NC571C PCIe dual-port 4x fabric adapter.
- Related Spare: 374931-001
- Compatibility Note: This is an InfiniBand fabric adapter, not a conventional Ethernet NIC. It uses a PCIe x8 host interface and supports dual-port 4x InfiniBand connectivity.