This usb a port cover caps compatible with various standard usb 2.0/ usb 3.0 port equipment, such as PC computer, laptop, usb hub, tv box, tv or other usb Type-A port equipments. The usb dust cover can protect the usb interface from dust, grime, moisture and oxidation or other tiny object from entering, keeps the usb port clean and works for a long time! This usb port caps was desigened and made according to the standard interface and also with a small gripper, which would be simple and easy for assembly or disassembly. The set of usb dust cover made of high quality durable silicone material. High temperature resistant, and will not be deformed after long-term use. Package Contain: 40pc x USB Type-A Female dust cover. Color: Black. Please feel free to contact us if have any issue!