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What speed is QSFP?
Knowledge Base + 2024.01.12

QSFP (Quad Small Form-factor Pluggable) modules can support different speeds depending on the specific type and version. QSFP modules are commonly used for high-speed data transmission in networking applications, including Ethernet, InfiniBand, and Fibre Channel. Here are some common QSFP types and their associated speeds:

  1. QSFP:

    • The original QSFP module supports data rates of up to 40 gigabits per second (Gbps).

  2. QSFP+ (Enhanced QSFP):

    • QSFP+ modules are an enhanced version that supports higher data rates.

    • Common data rates for QSFP+ include 40 Gbps and 100 Gbps.

  3. QSFP28 (Quad Small Form-factor Pluggable 28):

    • QSFP28 modules support even higher data rates.

    • Common data rates for QSFP28 include 100 Gbps and 40 Gbps.

  4. QSFP56 (Quad Small Form-factor Pluggable 56):

    • QSFP56 modules are designed to support data rates of 200 Gbps and 400 Gbps.

    • They are used for high-speed connections in data centers and other networking environments.

The speed of a QSFP module is determined by the specific implementation, the type of optical or electrical interface used, and the networking standard (e.g., Ethernet, InfiniBand) being employed. Always refer to the specifications provided by the manufacturer of the QSFP module for accurate information on the speed of a specific module.


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