HDMI cables transmit both video and audio signals, but VGA cables are only able to transmit video. The back of the VGA adapter features a 3.5mm audio jack that allows you to attach an audio cable (not included) to your speakers or display so you can enjoy both audio and video from your HDMI-enabled device.

Why is audio not working through VGA?

The VGA cable only transmits a video signal. In order to transmit sound from your PC to the TV you must have the PC audio cable connected. The PC audio cable is a standard 3.5mm audio jack on both ends. ... Settings may need to be adjusted on the PC to control headphone jack sound.

Does VGA to HDMI have sound?

VGA does not carry an audio signal, so it would be discarded from the incoming HDMI signal. You would need to connect a separate audio cable or hook up speakers.