Support high baud rate such as 1.5M.
Outside diameter: OD 4.0
The red = VCC(You don't need to connect it most of the time, you can cut it off to prevent damaging the target debug board by accident)
The black = GND
The white= RXD
The green = TXD
Recent OS should support FT232RL out of the box, if the OS driver is not working, please download the driver and install manually.