The Mellanox MCX555A ECAT is a high performance network adapter, which is part of Mellanox's ConnectX 5 series. Here's an overview of its key features:

1. Introduction:

  The Mellanox MCX555A ECAT is designed for high speed data transfer and is commonly used in high performance computing (HPC), enterprise data centers, and cloud environments. It is known for its low latency and high throughput, which are critical for demanding applications.

2. Speed:

  The MCX555A ECAT supports 100Gb/s (100 Gigabit per second) Ethernet speeds, which is achieved through the use of four 25Gb/s lanes. This high speed connectivity allows for fast data transfer and is suitable for applications that require large amounts of data to be processed quickly.

3. Interface Type:

  The adapter uses the QSFP28 (Quad Small Form factor Pluggable 28) interface, which is a compact, high density optical transceiver. This interface supports multiple protocols, including 100GbE, and is designed to save space in high density environments.

4. Hardware Interface:

  The MCX555A ECAT is a PCIe (Peripheral Component Interconnect Express) card, specifically a PCIe 3.0 x8 interface. This allows it to be installed in a standard PCIe slot on a compatible server or workstation motherboard.

5. Chip Type System:

  The ConnectX 5 series, including the MCX555A ECAT, is based on Mellanox's BlueField 2 SoC (System on Chip). The BlueField 2 SoC is a powerful processor that includes an integrated network interface, offloading many network functions from the host CPU, which can improve overall system performance.

6. Additional Features:

  RoCE (RDMA over Converged Ethernet): Supports RDMA, which allows for direct memory access from one computer to another without involving the operating system, reducing latency and increasing throughput.

  VPI (Virtual Protocol Interconnect): Enables the creation of multiple virtual interfaces on a single physical adapter, which can be used to isolate traffic for different applications or tenants in a virtualized environment.

  Energy Efficient: The ConnectX 5 series is designed to be energy efficient, with features like power saving modes and dynamic power management.

7. Use Cases:

  The MCX555A ECAT is ideal for use in environments where high speed data transfer is critical, such as in scientific research, financial modeling, and large scale data analytics.

Please note that specific details such as the exact model number, firmware version, and other technical specifications may vary and should be verified with the manufacturer or the product's datasheet for the most accurate and up to date information.

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