The machine and what motherboard chipset driver you installed.
I would have noted which one I would use but you neglected the items asked for in the forum Note.
Got hold of new USB cable to connect the computer and Canon S520. Previously used printer cable for connection.
Start>Settings>Printers>Canon S520 Properties>ports displays LPT1-LPT3 and COM1-COM4, also FILE and Microsoft Document Imaging Writer Port. Missing are the USBNNN ports.Any suggestions? Thank you in advance