If you need to add a panel-mount connection that extends a micro SD card, this Round Panel Mount MicroSD Adapter Plug is the easiest and fastest way to panel-ify your project. The adapter is about 30mm in diameter, so you can drill a hole in your wood, plastic or metal with a common hole-saw or bit, no special shapes or filing required. Un-screw the plastic nut, insert the plug and re-attach. Ta-da! Now you have a microSD extension cable!