Power management turned off the USB port. Fix: Open Device Manager > Universal Serial Bus controllers > Right-click each "USB Root Hub" > Properties > Power Management > Uncheck "Allow the computer to turn off this device." Reboot.
For Windows 7/8.1, the Canon FAX-L140 runs perfectly with its legacy UFR II driver. For Windows 10/11, rely on Windows Update or the built-in generic driver. For modern macOS or Linux, this device is largely unsupported and should be considered via phone line, not as a network printer. canon fax l140 printer driver
The is the key to extending the life of a remarkably durable machine. While Canon may no longer advertise this model, the company maintains legacy drivers out of respect for the millions of units still in small offices and home businesses. Power management turned off the USB port
The Canon Fax L140 is a laser fax/printer device that requires the correct driver so your computer can send print jobs, manage fax functions, and access device settings. This guide covers locating, downloading, installing, troubleshooting, and updating the appropriate driver for common desktop OSes. For Windows 10/11, rely on Windows Update or
If you found this guide helpful, bookmark the official Canon support page. Beware of "driver update" scams—if a website asks for your credit card to download a free Canon driver, close the tab immediately.