USB specification 2.0 compliant with full-speed 12Mbps. Standard USB type A male and TTL 5pin connector. 5pins for 3.3V,TXD,RXD,GND & 5V All handshaking and modem interface signals Baud rates: 300 bps to 1.5 Mbps. Byte receive buffer; 640 byte mit buffer. Hardware or X-On/X-Off handshaking supported. Event character support Line break mission. USB suspend states supported via SUSPEND pins. Temperature Range: -40degto +85deg Supports Windows 98SE, 2003, XP, Vista, Window7, Mac OSX , Linux 2.6.x and 2.4.36 size:about 45 x 14 x 8mm Type:Voltage Regulator Model Number:CP2102 Application:Computer color:Red Material:PCB + electronic accessories Package Contents: 1 x CP2102 module 1 x Dupont Line (Random color, don't accept the specified color) 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.