Asus X555U E-Manual page 23

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 port
The USB (Universal Serial Bus) port provides a transfer rate of up
to 5 Gbit/s and is backward compatible to USB 2.0.
Kensington® security slot
The Kensington® security slot allows you to secure your
Notebook PC using Kensington® compatible Notebook PC
security products.
Notebook PC E-Manual
23