The page HowToIdentifyADevice/USB explains how to identify a USB device. Lack of firmware is the usual reason for the 'SIOCSIFFLAGS: No such file or directory' error message.Įnsure the firmware-ralink package is installed. The rt73usb kernel module is automatically loaded for supported devices.Ĭonfigure your wireless interface as appropriate.Įxamine the kernel ring buffer ( dmesg(1)) to verify the required firmware files are being loaded by the driver. Update the list of available packages and install the firmware-ralink package: # apt-get update & apt-get install firmware-ralinkĬonnect the device to your system. Ralink 802.11n USB devices are supported by the rt2800usb driver.įirmware is required for device operation:Īdd a 'non-free' component to /etc/apt/sources.list for your Debian version. The RT2501USB is not to be confused with the RT250 0USB, which is supported by the rt2500usb driver. It requires non-free firmware for device operation, which can be provided by installing the firmware-ralink package. Supported devices are listed at the end of this page. The Ralink RT2501USB wireless LAN chipset is supported by the rt73usb Linux kernel driver, introduced at Linux 2.6.24.

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