Can I use a C5100 with the S700 A4 CCS?
The C5100n is not supported with the S700 A4 CCS.
To print or copy using the S700 A4 CCS requires that you connect via LPT 1 to the Pass Through port the scancopier and connect a second parallel cable directly to the printer through the port marked To Printer on the scancopier. The USB connection is only used for scanning images to the PC.
As the C5100n doesn't have a parallel port, it is not supported for use with the S700 A4 CCS. The C5300 is supported.