Due to its design, the normal maximum length of a USB cable is around 5m (16.4ft), but you can achieve longer distances by using the CPA−UAM/UAF Active USB Extension Cable from Kramer! This is a mains powered extension cable that can be used to increase the length of a device without any signal dropout or potential performance issues. It contains active electronics that boost the USB signal for longer distance reliability and performance. The cable acts as a self-powered extender for USB cameras, photocopiers, webcams, keyboards/mouses, etc.
 
 Practical plug and play — no additional drivers required
 
 USB 2.0 high speed (480Mbps) standard
 
  Construction — 1 pair 24AWG + 2 pairs 22AWG + flat wire 24AWG, tinned copper wire
 
 No external power supply - draws power from input source
 
 for data transmission only—not for charging
 
  buffer in and out signal
 
  compatible with USB 2.0
 
 CMP–c(ETL) ratio
 
 Various length options - available in versions from 7.6 to 19.5m (25, 35, 50 and 65ft)