Description: Driver download address: http://pan.baidu.com/s/1gfreXbH 1. The brand new 340 chip series is an officially recommended USB to TTL chip by STC, and there will never be any incompatibility caused by different drivers/computers!!! 2. Golden appearance, high-quality yellow high-end needle arrangement, more durable and beautiful than black needle arrangement on the market 3. Not only does it have a power light PWR, but also TXD and RXD indicator lights, with reserved RTS and CTS positions for easy and intuitive understanding of whether the product is working without instruments; 4. 3V3 and 5V can be selected 5. Support WINDOWS 98/ME/2000/XP/Server 2003/VISTA/Server 2008/Win7/Win8 32-bit/64 bit