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    Configuring USB Interfaces

    The AirLink RX55 is equipped with a USB 2.0 Micro-B connector. This page describes how to:

    • configure the USB interface
    • create a USB network connection on a Windows or MacOS computer.

    Sierra Wireless recommends that you use a USB 2.0 cable with your AirLink RX55 and connect directly to your computer for best throughput.

    Configuring a USB Interface

    • ENABLE or disable the interface. The USB interface is enabled by default.
    • LAN SEGMENT: Click to select, or create, a different LAN segment for the interface.
    • MTU AUTO DETECT is always On when USB is connected to a LAN segment.
    • MTU: When the interface is part of a LAN segment, MTU is set to Auto.

    Configuring a USB Network Connection to a Computer

    The router in the examples below has the default LAN address set to 192.168.80.0/24 and IPv6 is enabled.

    Windows 10

    1. Plug in a data-capable USB 2.0 cable between your Windows 10 computer and the router. Your computer will require an Internet connection to proceed.

    2. Your Windows 10 computer indicates that it is setting up a virtual COM port, and confirms when the installation is complete. You can verify the status in the Notification Center.

    3. Go to Windows Updates and check for Optional Updates and select the Acer Incorporated – Other Hardware – USB Ethernet/RNDIS Gadget. (This may not be available if your computer uses an internal corporate Windows update server.)

      Note: The USB Ethernet/RNDIS Gadget can also be downloaded from Microsoft.

    4. After this initial setup, you can use the Device Manager to verify the presence of the “USB Ethernet RNDIS Gadget” in the Network Adapters list.

    5. To confirm that the network is available and the adapter has been assigned address(es), open a Command prompt window and type ipconfig.

    MacOS Big Sur (tested on 11.2.3)

    1. Plug in a USB 2.0 cable between your MacOS computer and the router. Your computer will require an Internet connection to proceed.

    2. In System Preferences, open the Network center and verify that the RNDIS/Ethernet Gadget appears and is connected.

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