The USB port (USB Type-C®) is for USB-MIDI data only, so the SDE-3000EVH cannot be powered via USB, and it cannot be used to power an external device via USB either. Power the unit using the included AC adaptor (PSB-1U) connected to the DC IN jack.
The USB port (USB Type-C®) is for USB-MIDI data only, so the SDE-3000EVH cannot be powered via USB, and it cannot be used to power an external device via USB either. Power the unit using the included AC adaptor (PSB-1U) connected to the DC IN jack.