KEDSUM&reg; CP2102 Module STC Download Cable USB 2.0 to TTL 6PIN Serial Converter For STC USB specification 2.0 compliant with full-speed 12Mbps. Connect MCU easily to your computer Stable and reliable chipset CP2102 Baud rates: 300 bps to 1.5 Mbps TTL interface output, easy to connect to your MCU. Status LED Standard USB type A male and TTL 6pin connector. 6pins for 3.3V, RST, TXD, RXD, GND & 5V.