100% brand new and high quality Features: 1. Added four most advanced and responsive rear buttons, which can be mapped to your -Xbox Series X/S controller. The ability to put your thumb on the joystick and your finger on the trigger greatly improves the response time of any game. Gain the competitive advantage you deserve and eliminate your partners. 2. Support TURBO function and TURBO speed regulation A variety of built-in controller models: including anti-recoil, rapid fire, airdrop, Turbo 2.0, automatic breath holding, automatic point, rapid arrival, automatic operation. 3. Each ultra-sensitive button can be mapped directly and instantly, without magnetic keys or any software or application interface. Tournament mode allows button mapping without mods. 4. Four remappable buttons The most advanced button mapping system can directly map all 16 controller functions (including triggers) to any of the four ultra-sensitive buttons. The button height and position have been rigorously tested and optimized to ensure reduced hand pressure, and it comes with a convenient 3 meters USB cable for delay-free gaming. Note: Compatible with X-box Series X / S controllers, but X-box Elite / Elite 2 controllers are not supported. Instructions for use: 1. Turn on the power of the X-box series X/S controller. 2. Remove the battery cover and battery from the original handle. 3. Install the product directly on the original X-box series X/S wireless controller. 4. Insert the type-C cable of the product into the original handle. 5. Connect the host and the handle with a data cable, connect the A male connector to the USB port of the host, and connect the Type-C male connector to the Type-C female socket of the product. After the connection is successful, turn on the computer power directly, the green LED1 light is on, and it enters the normal working mode. 6. Play normally at the request of the host. Specifications: Item Type: Back Button Attachment Material: ABS Color: Black Quantity: 1PC Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Back Button Attachment 1 x User Manual