Features: Product features: Using FT232RNL, much more stable than products, support.7/8/8.1/10/11.. Supports 3 power supply: 5V external power supply; 3.3V external power supply; Power by external sources (3.3V-5V required). Equipped with 3 LEDs: TXD LED, POWER LED TXD: using bent pin . Other function PIN: Reserved solder pad (for distribution pin, inserted up or down to access the user; PIN spacing supports insertion into board). Attention: This product not come with a USB cable. This module is converted from USB. Do not directly connect it to RS232 to avoid burning out the module. Used to connect computers with microcontrollers, wireless module, and other devices to achieve functions such as data transmission, program download, and debugging. Specifications: Materials: Plastic Package Includes: 1Set USB to UART Adapter note: Due to light and screen setting difference, the item color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.