When Windows fails to recognize the device, it often displays a generic code or the part number rather than the friendly name (e.g., "Canoscan LiDE 300"). This leaves users stuck trying to find drivers for a "FU78783" that doesn't technically exist on the support site.
First, a crucial clarification: like the Canon PIXMA TS9520 or Canon ImageCLASS MF743Cdw. canon fu78783 driver download install