Product description Specifications: Chip: CP2102 Interface: USB to TTL, 3.3V (<40mA), 5V, GND, TXD, RXD Power output: Dual 3.3V and 5V 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 Baud rates: 300 bps to 1Mbps Material: PCB 1. This is a USB 2.0 to TTL UART 6PIN CP2102 Module Serial Converter. Connect MCU easily to your computer! 2. Stable and reliable chipset CP2102 3. USB specification 2.0 compliant with full-speed 12Mbps. 4. Standard USB type A male and TTL 6pin connector. 6pins for 3.3V, RST, TXD, RXD, GND & 5V. 5. All handshaking and modem interface signals. 6. Baud rates: 300 bps to 1.5 Mbps. 7. Byte receive buffer; 640 byte transmit buffer. 8. Hardware or X-On/X-Off handshaking supported. 9. Event character support Line break transmission. 10. USB suspend states supported via SUSPEND pins. 11. Temperature Range: -40 to +85. 12. Support operating system: Windows 8/7/Vista/xp/server 2003/200, Mac OS-X/OS-9, Linux Packing Included: 4 x USB To TTL 5 pin UART STC Downloader Module 4 x Jumper Wires (20cm)