Package List: 1*PL2303 Module Adopt imported controller PL2303HX,which can stabilize the flash with high speed 500mA self recovery fuse for protection Two data transmission indicator can monitor data transfer status in real time Reserve 3.3V and 5V pin interface,easy for the DDWRT of different voltage system that need power The entire board is coated by high quality transparent heat-shrinkable sleeve,making