If you connect VGA to Monitor from your laptop,and VGA can not transmit audio,audio can only be connected through connecting the audio cable from the adapter to external speakers.
If you connect to display 2 monitors at the same time,please be well known that your all 2 external monitors will show the same images.
VGA and HDMI can connect at the same time,VGA and DP can connect at the same time,but HDMI and DP can not connect at the same time.
Support external power supply. When connect high power devices or the device is in low battery, you could connect External Power Supply via Micro B-5V power port to charge your adapter.
Transmit both audio and video from computer or tablet to HD TV via HDMI. Support video resolutions up to 1920x1080p (Full HD) and flawless audio pass-thru. Support audio output via VGA with connecting Audio interface external speaker needed for voice. When connect to monitors , all ports need a speaker to get audio out.