* The Adapter features a USB Type-C interface, Just plug it into the USB Type-C port of your Acer Chromebook 15 CB315, then plug a USB Device or a SD or micro SD card. * Use the Micro SD, SD card reader to import photos directly to you Acer Chromebook 15 CB315. * It's the perfect accessory to go with your Acer Chromebook 15 CB315.