USB to serial adapter uses FT232RL chips to provide better stability and compatibility, and easily realize industrial-grade high-performance communication between computers and TTL equipment. PWR TXD RXD3 data indicator red lights, clearly display the working status, convenient for your programming and debugging. Communication rate: 300bps-3Mbps, the module is powered by USB 5V, and the output of 3.3V or 5V can be achieved by adjusting the switch. The product is small and exquisite and easy to carry. The interface is a USB-A type interface, which can be directly connected to computer equipment and has interface protection, such as self-recovery fuse, ESD electrostatic protection and IO protection diode circuit, to avoid damage to products and equipment. USB to TTL Serial Adapter Compatible With Multi Systems For Win7/8/8.1/10/11, for , Linux, Android, WinCE, etc. Color:Black Material:plastic Package Contents: 1 * USB to TTL Serial Adapter 1 * 8Pin Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.