12USB Service Port:The USB port is for service and updates if needed. Contact us if youneed service.Smart ScanTM:Smart ScanTM will automatically switch to the HDMI input sourcewhen the input source is turned on and detected. If no HDMI sourcesare detected, then the switch will go into standby mode. The Scan isON as default.Note 1: Some source devices are by design always ON and not ableto shut off. Smart Scan may not work properly in systems withmultiple sources that are by design always ON.Turning Scan OFF:In the event that you wish to Turn OFF the Smart Scanfeature please follow these steps:To Disable Scan1 Connect Power to theswitch2 Press and hold down the HDMIselect AND Toslink Audio SelectButton for 5 seconds until LEDdisplay shows 03 Done. Scan is nowturned offTurning Scan ON:You can turn the Smart Scan feature back on by simplyrecycling the power to the switch. This will enable theSmart Scan feature.