Colour: blue + black Material: ABS Package Contents: 200 x RJ45 Port Hub Anti Dust Cover 2 x Black proprietary lock and key Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 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 protected computer interface, to new for a long time. interface absorb moisture to prevent oxidation, leading to a short circuit. effectively reduce the static electronic products, to avoid a breakdown event. Designed to fit into all Ethernet Port RJ45. Plug it,Protect open ports or Identify dead ports;Prevent use;Show users where to connect. When not in use, please protect the RJ45 female jack from dust and oxygen. Completely block any gaps and prevent dust more effectively.