Vengeanze
X-45 throttle dont have you own USB controller - depend of X-45 joystick controller to work.
Some people merge stick circuit into throttle base:
This give you some additional rotary (X and Y of RIP stick) and buttons.
Or turn the stick (necessary to control X-45 throttle) in some (nice) button bay:
X-52 throttle control both throttle and stick, so you can use X-52 throttle stand alone - with other brand joysticks.
Sokol1