Asus N550JV E-Manual page 24

Mini DisplayPort port
Use this port to connect your Notebook PC to a DisplayPort or
VGA, DVI, or HDMI external display.
USB 3.0 port
This USB (Universal Serial Bus) 3.0 port provides a transfer rate
of up to  Gbit/s and is backward compatible to USB .0.
USB 3.0 port with USB Charger+
This USB 3.0 port with the icon comes with the USB Charger+
feature. USB Charger+ allows you to quick-charge mobile
devices and can be used even while your Notebook PC is on
sleep, hibernate, or shutdown mode*.
* on selected models only
Headphone output/microphone input combo jack port
This port allows you to connect your Notebook PC to amplified
speakers or headphones. You can also use this port to connect
your Notebook PC to an external microphone.
 Notebook PC E-Manual