Repeat steps 4-7 for any remaining devices in the Universal Serial Bus Controllers section with “ Root Hub” in the name.Clear the box next to Allow the computer to turn off this device to save power.Forget the hassles of IRQ sharing by adapting your printer to USB. If you have access to a Win 7 computer that has a parallel port you could test to see if the printer works on that machine, which might indicate the ML 321 drivers are working. If the problem is with the ML 321 Win 7 driver youll probably experience the same problem. Right-click the first USB Root Hub device and select Properties. This cable uses the USB port on your PC or hub, so your parallel port remains free for a zip drive or scanner. If the problem is with the cable (or process of conversion) this might be a fix.Expand Universal Serial Bus controllers by clicking the arrow to the left of it.On your desktop, right-click the My Computer icon and select Properties.Click the Start button and select Control Panel.Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection. Click the plus sign (+) next to “USB settings” and “USB selective suspend setting” to expand the options and change the setting to Disabled.

Click Change plan settings for the plan you want to change.

Click Hardware and Sound, then click Power Options.On your keyboard, press the Windows key + X and select Control Panel.USB-DB25F 6-ft USB printer cable Driver CD Cable and packaging color may vary. The steps below outline how to configure the USB root hub to stay on during hibernation, to prevent this from happening. Sends print jobs to parallel printers through USB port Fully compliant. If the USB device does not work after your computer has been in extended hibernation, it is likely that Windows has automatically turned off the USB Root hub to save power.

Usb parallel printer cable driver