Fangrui Product Details 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 Transmit Buffer. Hardware Or X-on/x-off Handshaking Supported. Event Character Support Line Break Transmission. 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, Dont 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.