NVIDIA Mellanox® MSX1400-BS2F2 SwitchX-2 Open Ethernet Switch — 48× SFP+ / 12× QSFP+

Technical Identity
The NVIDIA Mellanox® MSX1400-BS2F2 (SX1024 platform) is a 1U Open Ethernet top-of-rack switch built on the SwitchX-2 ASIC. The unit delivers 48× SFP+ host-facing ports at 10 GbE plus 12× QSFP+ uplink ports at 40 GbE, totaling 1.92 Tb/s of non-blocking switching capacity and ~1.43 billion packets-per-second forwarding rate. Each 40 GbE QSFP+ port can be operated as 4× 10 GbE via splitter cables, expanding effective host density up to 96× 10 GbE. The "BS2F2" designation denotes the standard-depth chassis with 2× redundant power supplies and 2× hot-swappable fan trays.

Specifications

Brand: NVIDIA Mellanox
Part Number (MPN): MSX1400-BS2F2
Platform / ASIC: SwitchX-2 (SX1024 family)
Form Factor: 1U, 19" rack-mount
Host Ports: 48× SFP+ (1/10 GbE)
Uplink Ports: 12× QSFP+ (10/40 GbE, splittable to 4× 10 GbE)
Total Throughput: 1.92 Tb/s non-blocking
Packet Rate: ~1.43 Bpps
Port-to-Port Latency: ~250 ns (cut-through, 40 GbE)
Protocol: Ethernet only (this variant)
Power Supplies: 2× hot-swap redundant AC PSU
Cooling: 2× hot-swap fan trays
Management: MLNX-OS / Onyx, Cumulus Linux, ONIE bootloader
L2 / L3 Features: VXLAN, MLAG, OSPF, BGP, ECMP, IPv6, sFlow
Condition: New, factory-sealed


What This Is NOT

NOT an InfiniBand switch. The "-BS2F2" Ethernet variant of the SwitchX-2 SX1024 platform runs Ethernet only. The InfiniBand / VPI variant is a different MPN (MSX6036 family for FDR IB). Do not order this unit for FDR / EDR / HDR fabrics.
NOT a Spectrum-series switch. SwitchX-2 is the previous-generation Mellanox ASIC and uses MLNX-OS, not Spectrum-2 / Spectrum-3 SDKs. Feature parity with the SN2000 / SN3000 / SN4000 Spectrum lineup is not guaranteed.
NOT a 25 / 100 GbE switch. Port speeds are 10 GbE (SFP+) and 40 GbE (QSFP+) only. SFP28 / QSFP28 transceivers will not link.
NOT bundled with transceivers, DAC/AOC cables, or rail kits unless explicitly stated in the order. Standalone switch unit.


Compatibility & Constraints

SFP+ ports: 10GBASE-SR/LR/ER optical transceivers, 10G SFP+ DAC cables (passive or active), and 10G SFP+ AOC. SFP28 25 GbE optics are not supported.
QSFP+ ports: 40GBASE-SR4/LR4/ER4 optics, 40G QSFP+ DAC/AOC, or 40G→4×10G QSFP+ splitter cables (e.g., MC2609125-005 family). QSFP28 100 GbE optics are not supported.
Host adapter pairing: NVIDIA Mellanox ConnectX-3 / ConnectX-4 / ConnectX-5 / ConnectX-6 family adapters operating in 10 GbE or 40 GbE Ethernet mode. ConnectX-3 Pro and ConnectX-4 Lx are the most common hosts for SX1024-class fabrics.
Management: Out-of-band 1× RJ45 management port, USB and RJ45 console. Configuration via CLI (SSH), SNMP v2/v3, REST API, JSON gRPC, Ansible, or the web UI under MLNX-OS / Onyx.
Rack & Power: 1U × 19" standard rack space. Verify airflow direction (port-to-PSU vs. PSU-to-port) before installing in hot-aisle / cold-aisle layouts.


Deployment & Use Cases

10 GbE top-of-rack aggregation with 40 GbE uplinks to spine — leaf-spine ToR for legacy and mid-life data-center pods.
Storage front-end network for iSCSI, NFS, and SMB targets running at 10 GbE.
Virtualization fabric for VMware vSphere, KVM, and Hyper-V clusters on ConnectX-3 / ConnectX-4 hosts.
Lab, staging, and pre-production environments where cost-efficient 10 / 40 GbE Open Ethernet is required.


Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MSX1400-BS2F2?
The MSX1400-BS2F2 is a 1U managed Open Ethernet switch on the SwitchX-2 (SX1024) platform with 48× SFP+ 10 GbE ports and 12× QSFP+ 40 GbE uplink ports, delivering 1.92 Tb/s non-blocking switching capacity. The unit is the Ethernet-only variant of the SX1024 family with dual redundant PSU and dual hot-swap fan trays.
Q. Can I run InfiniBand on this switch?
No. The MSX1400-BS2F2 is the Ethernet-only SKU of the SwitchX-2 family. For VPI or InfiniBand fabrics use the IB-capable MSX-series MPNs (for example MSX6036 for FDR InfiniBand). Loading an IB image on this part number is not supported.
Q. Are the QSFP+ ports breakout-capable?
Yes. Each of the 12× QSFP+ 40 GbE ports can be split into 4× 10 GbE lanes using a 40G→4×10G QSFP+ splitter cable, giving up to 96× 10 GbE host-facing ports when fully broken out.
Q. What software does the switch run?
MLNX-OS (Onyx) is the native NVIDIA Mellanox image. As an Open Ethernet platform with ONIE, it can also boot Cumulus Linux or compatible third-party network operating systems. Management is available via CLI (SSH), web UI, SNMP v2/v3, REST API, JSON gRPC, and Ansible.
Q. Is this a new or refurbished unit?
New, factory-sealed unit supplied in original NVIDIA Mellanox packaging where included. Bench-tested by T.E.S IT-SOLUTIONS prior to dispatch — port link verification, PSU and fan health check, and full cosmetic inspection.

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 gets free pre-sale compatibility advice on switch, adapter, transceiver, and cable pairing. Multi-currency B2B invoicing, EU stock with worldwide express shipping, and direct technical contact with our engineering team — not a call-center.