A knowledgeable, US-based, Network Hardware Specialist, with 15+ years experience, will review your request.
Based on the exact SKU, we will verify airflow and other details to calculate a quote.
A BrightStar Systems' specialist will personally reach out within 24 hours.
Guaranteed safe & secure checkout​
Payment Methods
Free ground shipping to all 50 states
DESCRIPTION
SPECIFICATIONS
INCLUDED
WARRANTY
SHIPPING
FAQS
DESCRIPTION
NVIDIA MSN2700-CS2FO – SN2700 32 x QSFP28 100GbE Open Ethernet Switch (formerly Mellanox)
The MSN2700-CS2FO is an NVIDIA SN2700 series fixed-configuration Open Ethernet switch built on the NVIDIA Spectrum (Spectrum-1) ASIC, providing 32 x QSFP28 100GbE in a 1U form factor. It delivers 6.4 Tbps of switching throughput and processes up to 4.7 Bpps, backed by a 16 MB fully shared packet buffer. NVIDIA’s official ordering description: “NVIDIA Spectrum based 100GbE 1U Open Switch with ONIE, 32 QSFP28 ports”.
Key Features
Ports: 32 x QSFP28 100GbE
Port speeds: 10/25/40/50/56/100GbE per port
Throughput: 6.4 Tbps
Packet rate: 4.7 Bpps
Packet buffer: 16 MB, fully shared across all ports
Latency: 300ns cut-through
Software: ONIE (install your choice of NOS) factory designation – note: software licensing, subscription and support entitlements are not conveyed with refurbished hardware
Airflow: P2C (power-to-connector) – air intake at the power/fan (rear) side, exhaust at the connector (port) side (blue FRU handles/dots)
Power supplies: 2 hot-swappable PSUs (1+1 redundant), AC or DC options per OPN
Dimensions (HxWxD): 1.72 x 16.84 x 27 in (43.9 x 428 x 686 mm)
Part numbers: Legacy OPN MSN2700-CS2FO = NVIDIA 920-9N101-00F7-0N1 (same hardware)
Port Flexibility and Breakout
Each QSFP28 port splits to 2 x 50GbE or 4 x 25GbE / 4 x 10GbE with breakout cables, for up to 64 x 50GbE or 128 x 25/10GbE per system. Actual modes depend on the installed network OS version and transceivers.
Spectrum Architecture
SN2700 systems are built on the NVIDIA Spectrum (Spectrum-1) switching ASIC with a fully shared, monolithic packet buffer – every port can draw on the entire buffer, which absorbs microbursts and many-to-one incast far better than segmented-buffer designs in the same class. The platform supports RoCE (RDMA over Converged Ethernet) for storage and AI east-west traffic, rich telemetry with NVIDIA What Just Happened (WJH) hardware-level visibility, and the Open Ethernet model: the same hardware runs multiple network operating systems, so the fabric is never locked to one vendor stack.
Deployment Scenarios
Leaf-spine data center fabrics: wire-speed L2/L3 with the fully shared buffer absorbing many-to-one bursts across all ports
Storage and hyperconverged backends: RoCE-optimized forwarding for NVMe-oF, vSAN and scale-out storage traffic
High-density aggregation: breakout support concentrates racks of 25/10GbE servers into a compact footprint
Choosing Among the Variants
SN2700 OPNs decode as follows: the letter before the airflow character sets the speed class (B = the lower speed build, C = 100GbE, V = 200GbE, W = 400GbE); F = P2C airflow (power-side intake, port-side exhaust) and R = C2P airflow (port-side intake, power-side exhaust); a trailing C = Cumulus Linux, a trailing O = ONIE only, and no trailing letter = NVIDIA Onyx. Important: NVIDIA’s F/R airflow letters are defined by intake side at the power side or connector side – do not assume they match other vendors’ F/R conventions. Match the airflow variant to your hot-aisle/cold-aisle layout and the software designation to your operations model; the underlying switch hardware within a speed class is otherwise identical.
Mellanox and NVIDIA Part Numbers
The SN2700 was designed by Mellanox Technologies, which NVIDIA acquired in 2020; the same platform has been sold under both the Mellanox and NVIDIA names. It carries two interchangeable part numbers: the original Mellanox-style OPN MSN2700-CS2FO and the newer NVIDIA number 920-9N101-00F7-0N1 – both identify exactly the same hardware. Listings and documentation referring to a “Mellanox SN2700” and an “NVIDIA SN2700” describe the same switch.
Frequently Asked Questions
Is the MSN2700-CS2FO a Mellanox switch or an NVIDIA switch?
Both names refer to the same product. The SN2700 platform was developed by Mellanox, which NVIDIA acquired in 2020. The OPN MSN2700-CS2FO and the NVIDIA part number 920-9N101-00F7-0N1 identify identical hardware.
What software does the MSN2700-CS2FO run?
This OPN designates a factory build with the ONIE boot loader only – you install the network OS of your choice (SONiC, Cumulus Linux and other ONIE-compatible systems). As with all refurbished hardware, software licensing, subscription and support entitlements are not conveyed with refurbished hardware – units are tested on original-spec firmware, factory reset, and configuration wiped. Confirm any OS licensing or support requirements with NVIDIA for your production environment.
What is the airflow direction of the MSN2700-CS2FO?
The MSN2700-CS2FO is the P2C (power-to-connector) variant: air intake at the power/fan (rear) side, exhaust at the connector (port) side. NVIDIA marks this direction with blue handles or dots on the fan and PSU modules. All FRUs in one chassis must share the same airflow direction.
What breakout options does the MSN2700-CS2FO support?
Each QSFP28 port splits to 2 x 50GbE or 4 x 25GbE / 4 x 10GbE with breakout cables, for up to 64 x 50GbE or 128 x 25/10GbE per system.
Is the refurbished MSN2700-CS2FO tested before shipping?
Yes. BrightStar Systems inspects and tests every unit on original-spec firmware, performs a factory reset and configuration wipe, and backs it with warranty (1 year end-user / 90 days reseller).
MSN2740-CB2R1 – related SN2740 platform – 32 x QSFP28 100GbE
Browse the full lineup on the NVIDIA Switches category page.
Refurbished by BrightStar Systems
BrightStar Systems supplies professionally tested refurbished NVIDIA and Mellanox networking hardware. Every unit is inspected, tested on original-spec firmware, factory reset, and configuration wiped before shipment, and backed by our standard warranty. Data center switching of this class is typically project-priced – request a quote for current availability and pricing.
SPECIFICATIONS
Model: MSN2700-CS2FO
Type: NVIDIA SN2700 Spectrum Open Ethernet switch, 1U
Ports: 32 x QSFP28 100GbE
Throughput: 6.4 Tbps | Buffer: 16 MB
Software: ONIE (license not included)
Airflow: P2C (rear intake, port-side exhaust)
Typical power: 130 W
INCLUDED
Model: MSN2700-CS2FO
Type: NVIDIA SN2700 (Spectrum) Open Ethernet switch, 1U
Ports: 32 x QSFP28 100GbE
Software designation: ONIE
Airflow: P2C (power-to-connector)
WARRANTY
1-Year BrightStar warranty for end user customers
90-Day BrightStar Warranty for resellers
SHIPPING
Free FedEx Ground shipping within the United States
FedEx Overnight shipping available as well
FedEx International Shipping available for customers outside of the United States
FAQS
Do you have questions about buying or selling hardware?
OUR KNOWLEDGEABLE TEAM IS WAITING TO ASSIST YOU »
