The right-angle OTG cable that connects to the Nook's USB port is a fragile connection. I added two velcro "soft side" to the front and back of the Nook on it's bottom. Then I wrapped a piece of velcro "hard side" from the back, around the OTG connector and secured to the front to support the connector and hold it in place. It's not perfect, but it's a simple solution to the problem of the cable eventually breaking the solder connectors from the micro usb connector to the main board.