NVIDIA Mellanox® MSX1012B-1BFS 12-Port 40GbE QSFP+ Open Ethernet Switch, 1U Short Depth: This is a 1U managed Open Ethernet leaf/aggregation switch with 12 QSFP+ ports built on the Mellanox SwitchX-2 ASIC, supporting line-rate 40GbE per port. This is a switch only — rail kit, transceivers, and DAC cables are not included unless explicitly listed. This is a refurbished unit, professionally tested by T.E.S IT-SOLUTIONS.
Engineering Context
The SwitchX-2 silicon supports cut-through forwarding for low end-to-end latency and provides full L2 switching with selected L3 routing capabilities depending on the installed software image. The 1U short-depth chassis fits shallow rack environments, edge cabinets, and lab benches that cannot accommodate full-depth core switches. Each QSFP+ port can operate at 40GbE or be split into 4x10GbE breakout where supported by the installed firmware and a breakout DAC. The unit ships with a single AC power supply and connector-side (port-side) airflow out.
Deployment & Use Cases
Top-of-rack 40GbE leaf switch in small to medium data centers. Aggregation point for 4x10GbE breakout to up to 48 x 10GbE downstream server links when populated with breakout DACs. Lab and proof-of-concept Open Ethernet test beds. Edge or remote-site 40GbE switching in shallow cabinets. Continuity for legacy SwitchX-2 estates running on Onyx (formerly MLNX-OS).
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MSX1012B-1BFS
ASIC: Mellanox SwitchX-2
Ports: 12 x QSFP+
Per-Port Data Rate: 40GbE (4x 10Gb/s)
Aggregate Port Bandwidth: 480 Gb/s unidirectional (12 x 40GbE)
Form Factor: 1U short depth
Network Type: Open Ethernet
Management: Fully Managed
Operating System: Onyx (MLNX-OS family); shipped with v3.6.8008 verified at refurbishment
Power Supply: 1 x AC
Airflow: Connector-side (port-side) airflow out
Rail Kit: Not included
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with QSFP+ 40GbE transceivers, MFA1A00/MC2210 active optical cables, MC2207-series passive copper QSFP+ DACs, and standard 4x10G QSFP+-to-4xSFP+ breakout DACs. Compatible as a leaf or pod-aggregation switch in NVIDIA Spectrum-led fabrics for protocol-compatible ports. Not an InfiniBand switch — InfiniBand HCAs cannot peer with this unit. Does not support 100GbE on its native ports; 100GbE requires Spectrum-based hardware such as MSN2700/SN2700. This unit ships with a single AC PSU; no built-in redundancy. Software image (Onyx 3.x) reflects what was validated at refurbishment; verify vendor lifecycle status before relying on long-term feature updates.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS verifies all twelve QSFP+ ports under load, confirms management interface reachability, and re-images the device to a tested software baseline before shipment. We provide expert consultation on Onyx configuration, global shipping, and a comprehensive warranty. Orders ship within 1–3 business days from confirmation.