Connectors are key components in electronic equipment, and their performance directly affects the reliability, stability and durability of the equipment. Here are some of the key performance indicators of the connector:

1. Electrical performance:
Electrical conductivity: The electrical conductivity of the connector directly affects the effect of signal transmission and power supply. High-quality connectors should have the characteristics of low resistance and low insertion loss.
Insulation: Good insulation performance can prevent signal interference and circuit short circuit. Connectors should be able to maintain stable insulation performance in high voltage.

2. Mechanical properties:
Number of plug and pull: The number of the plug and pull of the connector is an important consideration. High quality connectors can withstand thousands of plug and unplug operations without failure.
Connection relay: The connection between the connector plug and the socket should be moderate to ensure that the connection is tight but easy to plug and remove.

3. Environmental adaptability:
Corrosion resistance: Connectors should have some corrosion resistance to moisture, chemicals and other environmental factors to ensure long-term stable performance.
Dust and water resistance:  Connectors may need to be resistant to dust and water, especially in outdoor or industrial applications.

4. Temperature range:
Connectors should be able to operate properly over a wide temperature range, especially under extreme temperature conditions.

5. Size and shape:
The size and shape of the connector needs to be adapted to the specific application requirements, especially in devices with limited space.

6. EMI/RFI anti-interference:
A good connector design should have electromagnetic interference (EMI) and radio frequency interference (RFI) resistance to ensure stable operation in electromagnetic interference environments.

7. Insertion loss:
For optical connectors, insertion loss is a key performance parameter, which affects the efficiency of optical signal transmission.

8. Reliability and maintainability:
The reliability of connectors is the key to the long-term stable operation of equipment. Some connector designs also consider easy maintenance and replacement features to reduce maintenance costs.

9. Meet the standard:
The design and performance of connectors should comply with relevant international or industry standards to ensure their interoperability across different devices and systems.

In general, the performance of the connector is related to the stability and reliability of the entire system, so it is necessary to consider multiple aspects of performance indicators when selecting and designing the connector.