USB detection for CASIO calculators#

When looking for CASIO calculators, the following vendor and product identifiers (VID/PID) can be used:

Vendor ID	Product ID	Interface class	Description
`07cf`	`6101`	`255` (Vendor-Specific)	Graph 35+/75/85/95, fx-9860G Slim, Classpad 300
`07cf`	`6102`	`8` (Mass Storage)	Classpad 330+, fx-CG20, fx-CP400, fx-CP400+E

The interface class 255 is used when the device presents protocol 7.00 directly, while the interface class 8 is used in “USB key” mode, i.e. when the file system and main memory are presented using SCSI.

Note

For reference, the following USB serial cables have also be encountered in the wild:

Vendor ID	Product ID	Description
`0711`	`0230`	SB-88 serial cable (official CASIO cable).
`0bda`	`5606`	Util-Pocket (defunct alternative vendor) serial cable. Uses an USB serial converter from FTDI.

Note however that these should be used through the system’s serial bus interface rather than directly.