Features: 100% Brand New. Easy to put on and take off Prevent dust and debris from entering the port when it is not in use. Prevent the point of the ports oxidized and causing problem. Designed to fit into all Ethernet Port RJ45 Item: RJ45 Anti Dust Cover Fit for: for RJ45 Female Jack Color: Black/Transparent white (optional) Material: Silicone Package list: 10pcs x RJ45 Dust Plugs Note: 1.Please allow 0.1-2cm error due to manual measurement. 2.The color may have different as the difference display, pls understand. .