Hi, you got this usb voltage converter, right? Sorry for the misunderstanding,not the “wire”, There are many dark blue lines for circuit conductive on the PCB board, you just need to knife to cut the line which the red arrow points to. When you cut off it, the circuit connect to the “button” will be cut off.
Any other questions, write back to me, we will try our best to solve it.
Best regards,
DROK