Casio QT 6600 - 64 MB RAM Reference Manual page 134

Manager Operation
The procedure of Data Restore from the CF card
R-134
1. Sign on a clerk (if necessary)
2. Press the <MODE> and <CF CARD> key to assign "CF
card."
3. Insert the CF card to the slot securely.
Select "2. Data Restore" and press the <YES> key.
4. Select the appropriate file you want to restore.