Xbox 360 Controller:
RB + X Open Menu
DPAD UP/DOWN Scroll up and down
DPAD LEFT/RIGHT Scroll left and right (on scrollers)
A Select an option
B Go back to previous menu
Keyboard:
* These controls will soon be customizable, sorry for now!
NUMPAD2 Open Menu
NUMPAD8 Scroll Up
NUMPAD5 Scroll down
NUMPAD4 Scroll left (on scrollers)
NUMPAD6 Scroll right (on scrollers)
NUMPAD7 Select an option
NUMPAD9 Go back to previous menu