The CP2104's high level of integration, built-in USB2.0 full-speed function controller, USB transceiver, crystal oscillator, EEPROM and asynchronous serial data bus (UART), support modem full-featured signals, without any external USB devices. The CP2104 works similarly to other USB-UART switching circuits. The USB port of the PC is virtualized into a serial port through the driver to achieve the purpose of expansion._x000D_ _x000D_ Feature:_x000D_ _x000D_ Built-in USB transceiver, no external circuit breaker required _x000D_ Built-in clock circuit, no external circuit breaker required. _x000D_ Built-in power-on reset circuit. _x000D_ The voltage regulation inside the product can output 3.3V voltage. _x000D_ Meet the requirements of the USB2.0 specification. _x000D_ The SUSPEND pin supports USB status suspension. _x000D_ The asynchronous serial data bus is compatible with all handshake and modulation regulator interface signals. _x000D_ The supported data formats are data bit 8, stop bits 1, 2, and check bits. _x000D_ Built-in 512-byte receive buffer and 512-byte transmit buffer. _x000D_ Support hardware or X-ON/X-OFF handshake. _x000D_ With self-recovering fuse. In the event of an unexpected short circuit, it can effectively protect your downloader and computer USB port. _x000D_ With indicator light, the working status is clear at a glance. _x000D_ Supports both power supply outputs of 3.3V and 5V. _x000D_ _x000D_ Specification:_x000D_ PCB board size: 30.5mm*17mm_x000D_ PCB board color: Blue_x000D_ Chip: CP2104_x000D_ Support OS:_x000D_ For Windows 98/2000/XP/7/8/10_x000D_ For MAC OS-9_x000D_ For X-Windows CE_x000D_ For Linux 2.40 or higher version_x000D_ _x000D_ Package list:_x000D_ 1 * Module_x000D_ 1 * Wire_x000D_ _x000D_ Note:_x000D_ The actual product color may deviate from the photo due to light._x000D_ There may be a slight deviation in the measurement of product 1Built-in USB transceiver, no external circuit breaker required 2Built-in clock circuit, no external circuit breaker required. 3Built-in power-on reset circuit. 4Meet the requirements of the USB2.0 specification. 5The SUSPEND pin supports USB status suspension.