**Features:** 1. This product is a PS4 controller paddle with extended buttons, allowing you to customize button mapping on the back. It supports the TURBO burst function and is plug-and-play, providing users with a unique gaming experience. 2. Key Components: The device consists of 14 digital keys (□, X, ○, △, R3, L3, R2, L2, R1, L1, TURBO, SET). 3. Function Setting: * Long press the SET button for 2 seconds; the X light will flash rapidly. * Press M1 or M2 (press once to switch); the lights will flash slowly in sequence (Flashing Sequence: R3, L3, R2, L2, R1, L1). * When the target button is flashing, press the SET button to finish setting. * **Note:** The handle retains programming and memory functions even when not connected via Bluetooth or while charging. 4. Clear Cache: Long press the SET button for 5 seconds; the LED will change from blinking to off. 5. Memory Function: Reinserting the handle will retain the last programmed function. The factory default setting has no definition. 6. Turbo Function: Press M1/2 and TURBO simultaneously to enable the Turbo continuous launch function for the function key. Repeat this step to cancel. **Specifications:** * Item Type: Back Button Attachment * Material: ABS * Color: Black * Sleep Current: Less than 30uA * Working Current: Less than 15uA * Power Supply Mode: EXT wired connection * Working Voltage: DC 3.0-3.3V * Size: 99.5 x 57mm **Package Includes:** * 1 x Back Button Attachment * 1 x User Manual