Asus V551LB - Manual (Page 24)

 Notebook PC E-Manual
HDMI port
This port is for the HDMI (High-Definition Multimedia Interface)
connector and is HDCP compliant for HD DVD, Blu-ray, and
other protected content playback.
USB 3.0 ports
These USB (Universal Serial Bus) 3.0 ports provide a transfer rate
of up to  Gbit/s and are backward compatible to USB .0.
Status indicators
The status indicators help identify the current hardware status
of your Notebook PC.
Front Side
NOTE: The front side may vary in appearance depending on model.