For extending a USB (Universal Serial Bus) cable or a USB (Universal Serial Bus) device with integrated cable (eg mouse keyboard webcam headset speaker MP3 player etc) Additional shielding for good reduction of electromagnetic interference The inner conductor is made from copper which ensures best transmission properties Sturdy plugs & moulded strain reliefs high mechanical resistance Suitable & tested for USB (Universal Serial Bus) 20 backward compatible with USB (Universal Serial Bus) 11 Twisted data lines (twisted pairs)