USB 2.9 Adaoper generates RF noise interference

My USB 2.0 Display Adapter generates noise that interferes with the sound carries by audio cables from my computers headpone out signal to an external amplifier. How may I suppress or eliminate that noise?..Thanks

Hi Tim,

Thank you for contacting us about your USB display adapter. I’m sorry to hear you are having problems with it.

Are you using a shielded cable for the audio cable? Because the signal is being amplified to a large extent by the amplifier, even very small amount of interference can become a.problem, so it is generally good practice to use a shielded cable for input into an amp.

Could you describe the interference? Is it a hum, a crackling, or some other noise?

Thank you,

Plugable Support