The Monoprice Select Mini uses a mini SD card, which is inconvenient to operate and is very easy to lose. This simple and practical card holder can firmly fix the SD card and easily insert it into the MPSM slot and various SD card readers. The card slot on the card holder fits tightly with the SD card, but it is recommended to use quick-drying glue for reinforcement to ensure that the card holder will not loosen or fall off due to vibration or external forces.