New USB 2.0 to TTL UART 5PIN Module Serial Converter CP2102 STC PRGMR Free cable | eBay
Standard USB type A male and TTL 5pin connector. 5pins for 3.3V,TXD,RXD,GND & 5V. Byte receive buffer; 640 byte transmit buffer. All handshaking and modem interface signals. USB suspend states supported via SUSPEND pins.
