NVIDIA Mellanox MQM8700-HS2F Quantum HDR InfiniBand switch — MPN MQM8700-HS2F (NVIDIA P/N 920-9B110-00FH-0MD) — is a managed 1U HDR 200Gb/s InfiniBand top-of-rack switch built on the NVIDIA Quantum ASIC for AI training fabrics and HPC clusters. Sold by T.E.S IT-SOLUTIONS in refurbished condition. The HS2F variant is the externally-managed model with an integrated x86 dual-core management processor running MLNX-OS, capable of acting as the Subnet Manager (SM) for clusters of up to 2,048 nodes without an external SM appliance. This is a P2C (Power-to-Connector) airflow unit identified by blue port latches — it is NOT a C2P (front-to-back) airflow switch and IS NOT an Ethernet-only switch.
Engineering Context. The MQM8700-HS2F provides 16 Tb/s aggregate non-blocking switching capacity across 40 QSFP56 ports, each port supporting 200 Gb/s HDR InfiniBand with port-to-port latency in the sub-130 nanosecond range. The Quantum ASIC supports NVIDIA SHARP (Scalable Hierarchical Aggregation and Reduction Protocol) for in-network compute, offloading collective MPI reduction operations directly to the switch silicon and accelerating distributed AI training and HPC workloads. Adaptive routing, congestion control, and SHIELD self-healing network technology are supported. The switch is powered by dual hot-swap redundant AC power supplies and includes hot-swap fan modules. P2C airflow draws cold air from the PSU side (rear) and exhausts hot air from the port side (front).
Deployment & Use Cases. Spine and leaf positions in HDR InfiniBand fabrics, NVIDIA DGX SuperPOD reference architectures, large-scale AI/ML training clusters running NCCL collective operations, HPC supercomputing deployments using MPI (MPICH, OpenMPI, HPC-X), GPUDirect RDMA fabrics, NVMe-oF storage backends, and rear-cooled hyperscale GPU rack designs where standard C2P airflow would conflict with rack thermal layout. Compatible with NVIDIA UFM (Unified Fabric Manager) for fabric-wide telemetry, monitoring, and provisioning.
Technical Specifications.
OEM: NVIDIA / Mellanox
Model: MQM8700-HS2F (Externally Managed)
NVIDIA P/N: 920-9B110-00FH-0MD
Switch ASIC: NVIDIA Quantum (HDR InfiniBand)
Port Configuration: 40 x QSFP56
Per-Port Speed: 200 Gb/s HDR InfiniBand
Aggregate Throughput: 16 Tb/s non-blocking
Port-to-Port Latency: Sub-130 ns
Form Factor: 1U
Airflow Direction: P2C (Power-to-Connector, Blue Latch, Reverse Airflow)
Management: x86 dual-core CPU running MLNX-OS
Subnet Manager: Onboard, supports up to 2,048 nodes
SHARP Support: Yes (in-network compute for collective operations)
Power Supplies: Dual hot-swap redundant AC
Fans: Hot-swap fan modules
Condition: Refurbished
Compatibility & Hard Constraints. The MQM8700-HS2F connects exclusively to QSFP56 HDR cables and transceivers — NVIDIA MCP1650-series passive copper, MFS1S00-series active optical, and MMA1T00/MMS1W50 series transceivers. It supports HDR100 (100 Gb/s) operation via 2x HDR100 splitter cables and is backward-compatible with EDR (100 Gb/s) and FDR (56 Gb/s) speeds at reduced rates. The switch operates with NVIDIA ConnectX-6 VPI/HDR adapters (MCX653105A, MCX653106A) and ConnectX-7 NDR adapters (configured for HDR mode). It IS NOT compatible with QSFP28 EDR-native transceivers in their native form factor without QSFP28-to-QSFP56 mechanical considerations, and it IS NOT a Spectrum Ethernet switch — for Ethernet-only deployments, the SN3700 or SN4700 are the equivalent SKUs. The P2C airflow direction means this unit IS NOT suitable for standard front-to-back C2P aisle layouts; for C2P airflow the equivalent SKU is the MQM8700-HS2R. Predecessor in this family is the SB7800 EDR (100 Gb/s); the in-family successor is the QM9700 NDR (400 Gb/s).
Why Choose T.E.S IT-SOLUTIONS. T.E.S IT-SOLUTIONS supplies the MQM8700-HS2F MPN 920-9B110-00FH-0MD in refurbished condition with handling time of 1 to 3 business days. Each switch is bench-tested for full port link training, PSU redundancy under load, fan module RPM stability, and MLNX-OS boot integrity prior to dispatch. We provide global shipping, technical procurement consultation for HDR InfiniBand fabric design, and support for system integrators sourcing AI/HPC switching hardware. Visit tes-itsolutions.com for current stock and pricing across the NVIDIA Quantum HDR family.