I just bought a Dual connector 32gb. Great idea! It seems to talk to my phone, tablet, etc all just fine through the mini usb. But when I plug it into a laptop it wants to format it, or, it works for a minute then gives some kind of write error. I have better luck with my desktop, I wiggle it a bit when it fails, and it works for a while - or unplug replug. All the PC’s are Windows 7 Pro. Any ideas?