Keep the ports of your Macbook away from dust and dirt Functions: Dustproof, waterproof, anti-oxidation Protect each port of your Macbook Pro from dust and water and prevent oxidation and rust when your Macbook is idle Designed for Apple Macbook Pro  Compatible with: Macbook Pro A1278, Macbook Pro A1286 and Macbook Pro MD101CH/A MD102CH/A (model that without Retina display) 1 set (9pcs) anti-dust plug for:  1*Network card, 1*MagSafe, 1*Mini display port,  1*FireWire 800,  1*SD card slot,  2* USB 2.0, 2* Audio jack