Epson EPL-5700 Reference Manual page 74

Although connected to the USB hub, the printer does not
operate correctly
The printer may not be connected to the first level USB hub. There
are five levels of USB connectors, make sure that your printer is
connected to the first level.
Make sure that the computer has correctly recognized the USB
hub. Check the USB hub under universal serial bus in the device
manager.
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Troubleshooting