USB 2.0 Extension cable 20M, Cystal blue design, Gold-plated interface,antioxidant,Corrosion resistance Features:1.Usb specification 2.0 compliant,2 ... .Support full speed high speed,3.USB 1.1 and USB 2.0 compatible ... ,4.Supports RS232 series interface DB95.Supports over 1Mbps data transfer rate, ...