The fx-9750GII is a fx-9860GII
without backlight and with a smaller LCD.
It has 512k RAM, the standard 4MB Spansion flash, CPU 7355, a compatible LCD-chip. In fact the board-layout is nearly identical to that of the fx-9860GII. The fx-9750GII OS supports the standard OS update procedures.
Of course the OS is dramatically degraded, but it is possible to run a fx-9860GII OS on the fx-9750GII. This requires a special software.