Yes, the hardware can be replaced directly but currently there is no direct way to transfer the HMI software from the DOP-A series to the DOP-B series. The A75CSTD series has already been phased out, but the software is still compatible with Windows XP or Windows 7 (32bits). Open the .dop file with ScreenEdit 1.05.78; this supports the A75 series. In the model selection area choose a higher model like the DOP-A80THTD and press OK. Save the .dop file and now open it with the new HMI software DOPSoft. After selecting the .dop file, it will ask for the model to change to, and also ask for auto-resizing if necessary. If auxiliary keys are used, they may have to be removed as DOP-B08 does not have auxiliary keys.