Epson EPL-N3000 Reference Manual page 305

If EPSON USB Printer Devices does not appear on the Device
Manager menu, click the plus(+) sign beside Other devices to
view the installed devices.
If USB Printer or EPSON EPL-N3000 appears under Other
devices, the printer software is not installed correctly. Proceed
to step 5.
If neither USB Printer nor EPSON EPL-N3000 appears under
Other devices, click Refresh or unplug the USB cable from the
printer, then plug it into the printer again. Once you've
confirmed that these items appear, proceed to step5.
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Troubleshooting