Final answer:
When troubleshooting a connection issue with a computer, after cleaning the port with air, try connecting the device to a different port and check that the drivers are up to date and the cable is functional.
Step-by-step explanation:
When troubleshooting an issue with a computer not recognizing a device, after blowing out the ports with air, you should also consider connecting the device to a different port. This helps determine whether the issue is with the original port or with the device itself. Additionally, you should ensure that the device's drivers are up to date, that it is compatible with your operating system, and that the cable connecting the device is not damaged. Increasing the computer's RAM or changing the device's operating system, as well as unplugging all other devices, are not directly related to troubleshooting this particular problem.