kwmobile Anti-Dust Protection Plugs Set - Silicone Rubber Dust Plug Stopper for Apple MacBook Pro 13" 15" (Non-Retina) - Black NOTE: Dust plug set is only compatible with MacBook models without Retina display from mid 2009 to early 2011 PROTECTION: Set of anti dust port plugs protect your laptop, PC and notebook computer outlets from any dirt or dust DELIVERY: You will receive 9x flexible plastic caps. Suitable for USB ports, HDMI ports, SD card ports and much more DURABLE: Protections are made of durable and flexible silicone and plastic. All ports are secured and plugs can help extend the service life of your laptop NOTE: Plugs protrude slightly from connection ports to make them easier to remove. You will receive extras for more protection