The maximum throughput of a QSFP (Quad Small Form-Factor Pluggable) module depends on the specific type or standard of the QSFP module. QSFP modules support various data rates and standards, and the maximum throughput is determined by the specific version and application for which the module is designed. 

Here are some common types of QSFP modules and their associated maximum throughputs:

1. QSFP:

• Standard QSFP modules can support data rates up to 40 Gbps (Gigabits per second). These are often used for 40 Gigabit Ethernet (40GbE) connections.

2. QSFP+ (Quad Small Form-Factor Pluggable Plus):

• QSFP+ modules support higher data rates, typically up to 100 Gbps. They are commonly used for 100 Gigabit Ethernet (100GbE) connections.

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

• QSFP28 modules can support data rates up to 100 Gbps and are commonly used for 100GbE connections. There are also variants of QSFP28 that support higher data rates, such as 200 Gbps and 400 Gbps.

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

• QSFP56 is designed for even higher data rates, supporting 200 Gbps and 400 Gbps. It is commonly used for 200GbE and 400GbE connections.

It's important to note that the maximum throughput is determined by the data rate supported by the specific QSFP module and the application it is designed for. Additionally, advancements in QSFP technology may lead to new standards supporting even higher data rates in the future.

When selecting a QSFP module for a specific application, it's crucial to check the module's specifications and ensure compatibility with the networking equipment in use. The maximum throughput and supported data rates should be clearly specified in the datasheets provided by the QSFP module manufacturer.