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Mellanox Technologies

Mellanox MCX455A-ECAT ConnectX VPI Switch Module

SKU CH-QR90-8G0WM

ConnectX VPI adapter delivers 100 Gb/s InfiniBand and Ethernet connectivity for high-performance computing and data centres

  • EDR 100Gb/s InfiniBand delivers highest throughput for HPC clusters
  • 100Gb/s Ethernet connectivity enables flexible cloud and storage deployments
  • Virtual Protocol Interconnect supports both fabrics from one adapter
  • ConnectX-4 architecture accelerates data analytics and database workloads
  • First listed February 19, 2026 confirms current product availability

ConnectX VPI Adapter

The Mellanox MCX455A-ECAT is a ConnectX-4 VPI host bus adapter that delivers 100Gb/s InfiniBand and 100Gb/s Ethernet connectivity. It targets data centres running high-performance computing, cloud, analytics or storage workloads.

Who This Suits

This card fits environments that need Virtual Protocol Interconnect flexibility across InfiniBand and Ethernet fabrics. Buyers who require lower speeds, different port counts or alternative form factors should look elsewhere.

Deciding Specification

The adapter provides dual 100Gb/s ports using VPI technology, enabling a single port to operate as either InfiniBand or Ethernet. Confirm your switch and cabling support this speed and protocol before purchase.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $107.99
Pricier than about 63% of the 1,517 comparable items (median $68.99).

Specifications

Product
Brand nameMellanox

Questions about this item

How can I verify the ConnectX VPI adapter is operating at 100Gb/s after installation?

Check the link status LEDs on the bracket and confirm the negotiated speed shows 100Gb/s in the OS network utility or Mellanox management tools.

What accessories come with the MCX455A-ECAT and what must be purchased separately?

The adapter ships as the card only; compatible EDR InfiniBand or 100GbE cables and transceivers are sold separately.

Which ConnectX version should I choose for a 100Gb/s InfiniBand and Ethernet cluster?

The MCX455A-ECAT is a ConnectX-4 VPI model supporting both EDR 100Gb/s InfiniBand and 100Gb/s Ethernet in one card.

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