I have an SD card and windows will find it if I plug it in. To unplug it, I have to click this thing in the sys tray and stop the device. This prevents windows from scolding me when I unplug it. The problem is that when I plug it back in, windows no longer sees it. I'm sure there is a way around this, but I don't know what that is. By the way, it is an internal 4-in-1 USB style card reader.