Connecting the USB Extension Cable - Verizon Wireless USB551L 4G USB Modem

Note While use of the cable is not required, it may be utilized to provide increased performance under certain operating conditions (e.g. poor signal strength) and / or free up space around the computer's USB port.


  1. Insert the USB modem into the wide end of the Y-shaped cable then extend the modem away from the computer.
    Plug USB modem into the wide end of the Y-shaped cable
  2. Plug one or both of the USB connector(s) to the computer.
    Note Connecting both USB connectors will provide increased power to the device, which may improve Radio Frequency (RF) performance.
    Plug the USB connector(s) to the computer
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