I bought to self-written programs to test this tab on a tray. This works quite well so far and there is nothing except the scarce free space of less than 1.5 GB to complain. But after a few tests I wanted to reset the tablet back to factory settings. After several mails from CSL support I have learned that this is only possible by sending the tablet to CSL. The backup partition that is present on the device, so only occupies unnecessary memory of about 4 GB. Also, there will probably not be possible for system to the upcoming Windows 10 version update. Should anyone the tablet also once again want to return, I can only advise against the purchase.