eBay

Casio FX-Interface

Suitable for fx-7400G PLUS, fx-9750 and CFX-9850 series of calculators.

A bi-directional serial cable with 9-25 pin adapter, interfaces with MS Windows and Casio graphic calculators, allowing simple transfer of information from calculator to PC (and vice-versa).

Windows 7 64-bit is not supported

Full manual and software floppy disk also included.