Asus VivoTab RT - Manual (Page 25)

TF600T 
Dock connector
The dock connector connects the Tablet PC to the mobile dock
transforming your Tablet PC into a traditional notebook. When connected,
you can enjoy a standard QWERTY keyboard, USB 2.0 connectivity and
extended battery life of up to sixteen (16) hours.
Touchpad indicator
This indicator lights up when you disable the mobile dock’s touchpad.
Keyboard
The keyboard provides full-sized QWERTY keys with a comfortable travel
depth for typing. It also enables you to use the function keys, allows quick
access to Windows and controls other multimedia functions.
NOTE: The keyboard layout differs by territory.
Touchpad
The touchpad allows you to use multi-gestures to navigate onscreen,
providing an intuitive user experience. It also simulates the functions of a
regular mouse.
NOTE: Refer to section Using the Touchpad for more details.