Features: 1. Original chip, the COM port is generated after the driver is installed. 2. Connect standard MICRO MINI-USB line input to computer USB interface, with 3.3V and 5V voltage two power output 3. With self-recovery fuse. In the event of an unexpected short circuit, it can effectively protect your downloader and computer USB port 4. On-board status indicator, transceiver indicator, the status indicator will be on after the driver is properly installed, and the transceiver indicator will flash when communicating, with the running LED indicator. 5. Support baud rate from 300bps to 1Mbps 6. SMD components are welded by regular company, with stable quality and beautiful appearance. Specification: Condition: 100% Brand New Communication format support: 1) 5, 6, 7, 8 data bits 2) Support 1, 1.5, 2 stop bits 3) odd, even, mark, space, none check Support operating system: fit for windows 8.1/7/vista/xp/98, fit for Mac OS-X/OS-9, fit for Linux USB dock connector is MICRO MINI-USB Module Size: Approx. 16 * 20mm / 0.6 * 0.8in Includes USB transceiver, no external circuit breaker required Built-in clock circuit, no external circuit breaker required Built-in power-on reset circuit On-chip voltage regulation can output 3.3V Meet the requirements of the USB2.0 specification SUSPEND pin supports USB status hangs Asynchronous serial data bus compatible with all handshake and modulation regulator interface signals Supported data formats are data bit 8, stop bit 1, 2, and check digit Includes 512-byte receive buffer and 512-byte transmit buffer Support hardware or X-ON/X-OFF handshake Package List: 1 * USB to UART TTL Module 1 * T Type Pins 1、Original chip, the COM port is generated after the driver is installed. 2、Connect standard MICRO MINI-USB line input to computer USB interface, with 3.3V and 5V voltage two power output 3、With self?recovery fuse. In the event of an unexpected short circuit, it can effectively protect your downloader and computer USB port 4、On?board status indicator, transceiver indicator, the status indicator will be on after the driver is properly installed, and the transceiver indicator will flash when communicating, with the running LED indicator. 5、Support baud rate from 300bps to 1Mbps