USB-4751 supports the following events:
| Event Type | Description |
| ADS_EVT_INTERRUPT | Triggered when a certain number of above interrupts occur. The number is specified when applications call DRV_EnableEvent. |
| ADS_EVT_PORT0/ ADS_EVT_DI_INTERRUPT16 |
Triggered when Group 0 of the device generates a certain number of interrupts. The number is specified when applications call DRV_EnableEvent. |
| ADS_EVT_PORT1/ ADS_EVT_DI_INTERRUPT40 |
Triggered when Group 1 of the device generates a certain number of interrupts. The number is specified when applications call DRV_EnableEvent. |
| ADS_EVT_DEVREMOVED | Triggered when USB device is removed (unplugged). When get this event, please stop all I/O access and close the device by calling DRV_DeviceClose. |