NVIDIA SN4000 Series - Spectrum-3 100/200/400GbE Switches
The SN4000 series is the Spectrum-3 generation: 400GbE-cla...
NVIDIA SN4000 Series – Spectrum-3 100/200/400GbE Switches
The SN4000 series is the Spectrum-3 generation: 400GbE-class Open Ethernet switches with a 64 MB fully shared packet buffer, spanning dense 100GbE aggregation to 400GbE spine roles. This is the Mellanox-to-NVIDIA transition era – most units carry both an MSN4xxx OPN and an NVIDIA 920- part number. We also stock replacement PSUs, fan modules, and rail kits for this series.
Models
SN4700 – 32 x QSFP-DD 400GbE, 1U spine (6 variants + busbar-powered SN4700D)
SN4600C – 64 x QSFP28 100GbE, 2U aggregation (6 variants)
SN4600 – 64 x QSFP56 200GbE, 2U aggregation (4 variants)
SN4410 – 24 x 100GbE + 8 x 400GbE uplink leaf (3 variants)
Airflow and Software Variants
Each model ships in two airflow builds: P2C (power-side intake, port-side exhaust – blue FRU handles; OPN letter F) and C2P (port-side intake, power-side exhaust – red FRU handles; OPN letter R). Mellanox-format OPNs also encode the software designation: a trailing C = Cumulus Linux, O = ONIE, no letter = NVIDIA Onyx.
Refurbished SN4000 Series from BrightStar
Every unit is professionally inspected, tested on original-spec firmware, factory reset, and configuration wiped, with warranty included (1 year end-user / 90 days reseller). Software licensing and subscription entitlements are not conveyed with refurbished hardware. Switching of this class is typically project-priced – request a quote and our team will respond quickly with availability, airflow-variant guidance, and configuration help.
Explore Related Series
SN3000 Series – Spectrum-2 generation
SN5000 Series – Spectrum-4, 800GbE AI-fabric generation
All NVIDIA Switches – the full Spectrum lineup
