on the tip of the "USB Mass Storage Device". Open property page, the message tells a previous instance ... ", which used to be "USB Mass Storage Device". I looked at their signature, the date of "USB Mass ... still in memory. To make it work again, just reboot, or disable the device driver and reenable ... Storage Device" is 2006, and the "Realtek USB 3.0 Card Reader" is 2013, I'm not sure if it's the date