Over three years since I invested in this card and after a year or so of it working when it felt like it with the notebook turned on it I forgot about it.
Returning to it recently has discovered that neither Sandisk not Eye-Fi support this generation of their cards and their customer support is totally useless.
The software won't work with WIN10 and they have done nothing to assist their customers. They were happy to take the money off us all, and there must be thousands if not 0000's sold. But now we are on our own.
A 4GB SD card is worthless nowadays with ever increasing file sizes and write speeds. Another gimmick for the back of the drawer or the rubbish bin.