NVIDIA Mellanox® MSX1035B-1SFR — 40GbE Managed Open Ethernet Switch (SwitchX-2)

Technical Identity
The NVIDIA Mellanox® MSX1035B-1SFR (NVIDIA P/N: MSX1035B-1SFR) is a 1U managed Open Ethernet switch built on the Mellanox SwitchX-2 ASIC, providing wire-speed 40GbE forwarding across QSFP+ port interfaces. The "1S" denotes a single integrated AC power supply and "FR" denotes front-to-rear airflow (port-side intake), aligning with cold-aisle / hot-aisle data-center conventions. The switch ships with MLNX-OS for Ethernet, supporting standards-based L2/L3 features, SDN integration, and unified management. New, factory-sealed unit supplied by T.E.S IT-SOLUTIONS.

Specifications

Brand: NVIDIA Mellanox
Model / MPN: MSX1035B-1SFR
Product type: Managed Open Ethernet Switch
ASIC / Family: Mellanox SwitchX-2
Protocol: Ethernet (Open Ethernet)
Port speed: 40GbE per QSFP+ port; 4×10GbE breakout supported per QSFP+ cage
Connector type: QSFP+
Switching architecture: Non-blocking, cut-through, wire-speed
Operating system: MLNX-OS (Ethernet)
Management: Out-of-band Ethernet mgmt port, USB, RS-232 console, SNMP, REST, Web UI, SSH/CLI
Power supply: 1× integrated AC PSU (single-PSU configuration)
Airflow: Front-to-rear (port-side intake)
Form factor: 1U, 19" rack-mount
Condition: New, factory-sealed


What This Is NOT

NOT a Spectrum-family switch. The MSX1035B is built on the SwitchX-2 ASIC — it predates the Spectrum (SN2000/SN3000/SN4000) Ethernet line and does NOT run Cumulus Linux / NVIDIA Onyx-on-Spectrum images.
NOT an InfiniBand switch. This is an Open Ethernet product; it does NOT operate as a native IB fabric switch and does NOT host a subnet manager.
NOT a NIC, transceiver, or cable. Rack-mount switch chassis only — adapters, optics and DAC/AOC cables sold separately.
NOT supplied with redundant PSU. Single-PSU SKU; for 1+1 redundancy use a dual-PSU variant.
NOT shipped with rail kit, transceivers, or DAC cables unless explicitly listed in the line item.


Compatibility & Constraints

Host adapters: Pairs with NVIDIA Mellanox ConnectX-3 / ConnectX-3 Pro / ConnectX-4 Lx / ConnectX-4 / ConnectX-5 in Ethernet mode. Standards-compliant 40GbE adapters from other vendors (Intel, Broadcom, Chelsio) interoperate at the protocol layer.
Cables & optics: QSFP+ MSA-compliant DAC, AOC, and optical transceivers (e.g., 40GBASE-SR4, 40GBASE-LR4). Breakout to 4×10GbE supported with QSFP+-to-4×SFP+ hybrid DAC/AOC.
Multi-vendor fabrics: Interoperates with Cisco, Arista, Juniper, Dell, HPE 40GbE QSFP+ ports under standard L2/L3 protocols (LACP, MLAG/MC-LAG, OSPF, BGP, VXLAN where licensed).
Power & cooling: Verify rack PDU phase / amperage and confirm front-to-rear airflow matches the row direction before installation.
Firmware: Confirm MLNX-OS image and feature-license alignment before deploying into production; firmware not bundled.


Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MSX1035B-1SFR?
It is a 1U managed Open Ethernet switch based on the Mellanox SwitchX-2 ASIC, with QSFP+ ports running at 40GbE (or 4×10GbE via breakout), a single AC power supply, and front-to-rear airflow. MLNX-OS provides L2/L3, SDN, and standards-based management.
Q. Is this a Spectrum switch?
No. The MSX1035B is built on SwitchX-2 and is part of the earlier SX1000-series Open Ethernet line. Spectrum-family switches (SN2000/SN3000/SN4000 series) use the Spectrum / Spectrum-2 / Spectrum-3 ASIC and are sold under different MPNs.
Q. Can the QSFP+ ports be split into 4×10GbE?
Yes. Each QSFP+ cage supports breakout to 4×10GbE with appropriate hybrid DAC, AOC, or breakout transceivers, allowing the switch to act as a high-density 10GbE top-of-rack aggregator.
Q. What is the airflow direction of the -1SFR variant?
Front-to-rear (FR) — air is drawn from the port side and exhausted out the PSU side. Match this direction to your cold-aisle/hot-aisle configuration; do not mix airflow directions in the same row.
Q. Does it interoperate with non-NVIDIA equipment?
Yes. QSFP+ is MSA-compliant and MLNX-OS implements standards-based Ethernet, so the switch interoperates with Cisco, Arista, Juniper, Dell, HPE, and other vendors at standard L2/L3 and with MSA-compliant optics and DAC/AOC cables.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
New, factory-sealed unit in original NVIDIA Mellanox packaging where included. Refurbished units, when offered, are bench-tested by T.E.S IT-SOLUTIONS — port-by-port link verification, EEPROM / vendor data check, and cosmetic inspection. All units ship from EU stock with professional anti-static packaging and global B2B shipping.

Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based NVIDIA Mellanox specialist serving HPC, AI, and enterprise data-center procurement teams since 2007. Every switch is identified by MPN, NVIDIA P/N, and ASIC generation before it ships, and every customer receives free pre-sale compatibility guidance for switch, adapter, transceiver, and cable pairing. Multi-currency B2B invoicing, EU stock with worldwide express options, and direct technical contact with our engineering team — not a call-center.