Broadcom N1400GD Single-Port 400 Gb/s QSFP-DD PCI Express 5.0 x16 OCP 3.0 Ethernet Network Interface Card | BCM957608-N1400GDP00

Model: N1400GD

Connector: QSFP112-DD

Speed: 1x400G

400G Single-Port OCP 3.0 PCIe 5.0 Adapter: Built on Broadcom's scalable 400G Ethernet controller architecture, the N1400GD is a standards-compliant 400G QSFP112-DD OCP 3.0 adapter delivering line-rate, full-duplex throughput with multi-speed support at 400/200/100/50/25G on a single port. Engineered for the most demanding AI/ML training clusters, high-performance computing, cloud data centers, and NVMe storage disaggregation environments.
4th-Gen RoCE with Hardware Congestion Control: The N1400GD supports fourth-generation, standards-based RDMA over Converged Ethernet (RoCE) with hardware-based congestion control, delivering the lowest latency in real-life scenarios and dramatically reducing RoCE deployment complexity at scale.
Secure OCP 3.0 Adapter: The N1400GD delivers the industry's most secure OCP 3.0 adapter solution, with secure boot and hardware attestation anchored in Broadcom's Silicon Root-of-Trust (RoT) - providing unparalleled platform security for zero-trust data center architectures.

Specs

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Details
Speed	400/200/100/50/25G
Connectors	1 x QSFP-DD 112

Features
Features	NETWORK INTERFACE 8 SerDes capable of 100/50G PAM4 and 25G NRZ QSFP-DD 112 support Single-port 400/200/100/50/25G 400Gb/s total bandwidth Auto-negotiation with auto-detect IEEE-1588v2 HOST INTERFACE 16 lanes of PCI Express 5.0 Link rates: 32, 16, 8, 5, 2.5 GT/s Lane configuration: x16, x8, x4, x2, and x1 MSI-X support PLATFORM SECURITY: HW Secure Boot (RoT) Attestation (SPDM) OCP Secure Recovery Secure Wipe and Restore OCP Silver Security Badge (Cert Pending) RoCEv2: Standards-based DCQCN Peer Memory Direct Smart Congestion Control: DCN and SARA Automated Configuration NETWORKING/VIRTUALIZATIONS AND ACCELERATIONS: RoCEv2 Multi-Queue, NetQueue, and VMQ Single Root I/O Virtualization VF isolation and protection VXLAN, GRE, NVGRE, Geneve, and IP-in-IP Tunnel-aware stateless off-loads Edge Virtual Bridging (EVB) Stateless TCP offloads: IP/TCP/UDP checksum, LSO, LRO, GRO, TSS, RSS, aRFS, Interrupt coalescing kTLS hardware offload encryption/decryption support QUIC hardware offload encryption/decryption support TruFlow PROCESSING Flexible matching key NAT and NAPT Tunnel encap/decap Custom tunnel processing Connection tracking Flow aging Sampling and mirroring Rate-limiting and metering Flow-based statistics Network Traffic Hairpin MANAGEABILITY: Network Controller Sideband Interface (NC-SI) Management Component Transport Protocol (MCTP) MCTP over SMBus/I2C MCTP over PCIe VDM NC-SI over MCTP Platform Level Data Model (PLDM): Base, Monitoring/ Control & FW update

Dimensions & Weight
Weight	138g

Additional Information
First Listed on Newegg	September 09, 2025