In devices with dual wireless network cards that operate in the 2.4 GHz and 5 GHz bands, customers usually prefer one or the other depending on their specific connection needs. Here are some factors that influence this preference:

1. 5 GHz band: Generally preferred for its ability to support higher data rates and less interference, as fewer devices use this band compared to 2.4 GHz. It is ideal for applications that require high bandwidth, such as streaming. HD video or online games.
2. 2.4 GHz band: Although it provides lower speeds compared to 5 GHz, it has a wider range and better ability to penetrate obstacles such as walls. This band is useful for devices that do not require very high connection speeds or that are further away from the router.

Regarding prioritization of connection to a specific band, it is possible to influence which band clients connect to. There are several strategies you can use:

• SSID Segmentation: Some routers allow you to configure different SSIDs for each band, allowing users to consciously select which network they want to connect to. For example, you could have one SSID for the 5 GHz band and a different one for the 2.4 GHz band.
• band-steering: This is a technology used by some more advanced routers that automatically directs client devices to the band that best suits them, based on the device's capacity, distance to the router, and current network congestion conditions. This functionality must be supported by the router and configured properly to work correctly.
• Policy configuration on the AP controller: In environments with multiple access points managed through a central controller (such as in enterprises or campuses), policies can be established that prioritize one band over another for certain types of devices or applications.

Implementing these strategies can help maximize the efficiency of your network, ensuring that devices use the band that best suits their needs and current network conditions.