Which type of devices is least likely to experience interference?

Wired mice are the type of devices least likely to experience interference primarily because they utilize a physical connection rather than relying on radio waves or Bluetooth signals. This cable connection provides a direct pathway for data transfer between the device and the computer, completely bypassing potential disruptions that can arise from other wireless signals in the environment.

In contrast, wireless headphones, Bluetooth speakers, and Wi-Fi routers all operate using wireless technologies, making them susceptible to various forms of interference. This can include cross-talk from other devices, signal obstructing obstructions like walls, and frequency congestion from numerous similarly operating devices in close proximity. Therefore, the wired nature of a wired mouse inherently safeguards it against such interference, making it the most reliable in terms of consistent signal performance.