6FT High-Speed USB 2.0 printer cable A to B for Epson Stylus NX400 Compatible With Printers & Other USB 1.0 / 2.0 Devices Pure copper wires-No CCA(Copper Clad Aluminum) and Gold Plated Inner Contacts, It directly affects data speed Transmits Hi-Speed Data Up To 480 Mbps With Error-Free, High-Speed Performance Supports Up To 127 Devices On A Daisy-Chain Configurations Limited Lifetime Warranty