[Judging by the amount of activity here, D-Link needs to do a better job of publicizing these Forums. Particularly since their own technical support is limited to copying text from the FAQs.]
In my experience, SharePort (v1.14) needs more development work before it can be considered a finished product. I tried to attach an external hard drive to the SharePort, for the purpose of running scheduled backups. Sometimes my external drive receives a drive letter, but most times it does not. When it does not, I have to unplug the drive from the SharePort and plug it back in again. Even then, the drive letter mysteriously vanishes during the day.
In addition, data transfer to the SharePort is substantially slower than when I plug my external drive directly into a USB port on my computer.
It's a great concept, but it's not ready for prime time yet.