Describe: This product is made of environmentally friendly PP material, non-toxic and harmless, and can be dust-proof and moisture-proof to avoid damage to port. To your computer's data from being stolen, block the computer's USB port. High material, durable and long service life. Easy to disassemble, very suitable for daily use. The components are precisely fitted, which effectively protects the components and will not damage the USB interface. Brand new high ! Type: RJ45 network cable port security lock Color: red Material: PP Features: Dust-proof and moisture-proof, data security, repeated and durable, easy to disassemble. Instructions: 1. Align the detachable network port safety plug with the RJ45 network port and it in. 2. Until the clip on the safety plug is blocked by port and cannot be pulled out. 3. Align the removal tool with the removal hole of the removable mesh plug and rotate it 45 degrees. (This product is only a network port plug. No removal tools are included) 4. Pull straight out, that is, the safety plug is removed. Applicable to: desktop computers, notebook computers, printers, etc. Package Contents: 10 x RJ45 Anti Dust Cover Cap 1 x KEY (color random Do not accept designation) Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.