When not in , please the RJ45 female from dust and oxygen. Completely block any gaps and prevent dust more effectively. Little handle lets you easy to put on and .Anti-dust plugs made of ABS, soft and flexible material, easy to put on and .Environmental protection and no peculiar smell. Insulated and computer interface, to make it new for a long time. interface absorb moisture to prevent corrosion oxidation, leading to a short circuit. effectively reduce the static electronic products, to avoid a breakdown event. Plug it, open ports or Identify dead ports;Prevent ;Show users where to . Designed to fit into all Ethernet Port RJ45. Colour: red + black Material: ABS Package Contents: 100 * RJ45 Port Hub Anti Dust Cover 1 * Black proprietary lock and key Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.