1、1. Use: The extended buttons are compatible for PS4 controller management, you can customize the button function mapping on the back, support TURBO function, and bring users a different game experience. 2、2. Programming function setting: Long press the SET button for 2 seconds, the corresponding LED flashes quickly (4HZ), then short press the M1 or M2 button, the LED lights will flash slowly on the screen of the corresponding function (lighting sequence is X, ○, △, □, R3, L3, R2, L2, R1, L1), and then press the SET key, the corresponding function will be mapped to M1/2; for example: when entering the programming mode, press the M1 key to display the LED Go to R1, and then press the SET button again, the LED on R1 will turn on and the function of M1 will be R1; programming M2 is similar to the above. 10 LEDs are used as key function indicators to indicate the function of the programming keys, and up to 2 LED lights can be displayed. 3、3. Cancel function: Long press the SET button for 5 seconds, the programming indicator LED will change from fast flashing to off, and the M1/2 function will be cleared. At this time, the button has no programming function. 4、4. Programming button memory function: insert the back key extender into the handle, if M1/2 has no function, LED1 flashes slowly (2HZ) for 3 seconds and then goes out, long press the SET button to enter the programming mode and LED1 flashes quickly; if M1/2 The last programming function is memorized, and the corresponding LED light is on. The previous programming function is saved when the power is turned off; the previous programming function is still retained when the handle is inserted again, and the factory default has no programming function. 5、5. Turbo function setting: Press and hold the function button and the Turbo button at the same time, the function button has the Turbo burst function; press the above combination key again to cancel the button Turbo function. If the Turbo function is set, after pressing the button, the LED corresponding to the function flashes quickly (4HZ). Product name: Colour: Black Material: ABS Interface type: USB Single size: 11*9.5*4.5cm Weight: 46g 1 x Back Button Attachment Compatible for PS4 1 x User Manual