Asus TX201LA - Manual (Page 27)

ASUS Transformer Book Trio E-Manual 
Left Side
Headphone output/microphone input combo jack port
This port allows you to connect your PC station to amplified
speakers or headphones. You can also use this port to connect
your PC station to an external microphone.
USB 3.0 port (for Windows® 8)
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 2.0 port (for Android®)
This USB (Universal Serial Bus) port is compatible with USB .0
or USB 1.1 devices such as keyboards, pointing devices, flash
disk drives, external HDDs, speakers, cameras and printers.
Status indicators
The status indicators help identify the current hardware status
of your PC station.
Power indicator
The power indicator lights up when the PC station is turned on
and blinks slowly when the PC station is in sleep mode. It also
indicates that Windows® 8 is already booted up.