Xbox
Released in 2001, the Xbox control pad was the first controller made for the original Xbox. The Xbox controller features two analog sticks, a pressure-sensitive directional pad, two analog triggers, a Back button, a Start button, two accessory slots and six 8-bit analog action buttons (A/Green, B/Red, X/Blue, Y/Yellow, and Black and White buttons). The standard Xbox controller (originally nicknamed the "Fatty" and later the "Duke") was originally the controller bundled with Xbox systems for all territories except Japan.
Xbox 360 controller
The Xbox 360 controller is the primary controller for the Microsoft Xbox 360 video game console that was introduced at E3 2005. The Xbox 360 controller comes in both wired and wireless versions. Original Xbox controllers are not compatible with the Xbox 360. The wired and wireless versions are also compatible with Microsoft PC operating systems, such as Windows XP, Windows Vista, Windows 7, Windows 8, and Windows 10.