The choice of RJ45 connector can matter depending on your specific requirements and the type of network you are setting up. RJ45 connectors are commonly used for Ethernet connections in networking. Here are a few considerations:

1. Category of Cable: RJ45 connectors are used with Ethernet cables, and the category of the cable matters. For example, Cat5e, Cat6, Cat6a, and Cat7 cables have different specifications and support different data transfer rates. Make sure your connector matches the category of your cable.

2. Compatibility: Ensure that the RJ45 connector is compatible with the type of device or equipment you are connecting. Some connectors may be specifically designed for certain applications or devices.

3. Shielded vs. Unshielded: Depending on your environment, you may need shielded (STP) or unshielded (UTP) connectors. Shielded connectors provide extra protection against electromagnetic interference (EMI) and radio-frequency interference (RFI).

4. Crimp vs. Punch-down: RJ45 connectors can be either crimped or punch-down. Crimp connectors are commonly used for patch cables, while punch-down connectors are often used in structured cabling systems. Choose the one that fits your installation method.

5. Quality of the Connector: The quality of the connector can impact the overall performance of your network. Higher quality connectors may provide better reliability and performance.

In summary, it does matter what RJ45 connector you use, and the choice depends on factors such as cable category, compatibility, shielding, installation method, and connector quality.