About this product: [High-quality silicone material]: This RJ45 Ethernet port dust plug is made of durable silicone, which is soft, flexible and durable. The material ensures a tight fit and easy removal without damaging your device. [Easy to use]: Simply insert the dust plug into the RJ45 network cable port on your computer, router, switch or server. The soft silicone design makes it easy to push and pull out as needed. [Effective dust protection]: These dust plugs are designed to prevent dust, debris and moisture from entering, protect your Ethernet port from damage, and ensure a reliable connection when you need to use it. [Multi-color optional]: These dust plugs are available in black and clear colors to match the aesthetics of most electronic devices. Choose the color that best suits your device for a neat and organized look. Product details: Material: Silicone Size: 2*1.4cm Color: Black, Transparent Applicable: Applicable to RJ45 network cables in computers, routers, switches, and computer rooms Package includes: 10/20/40*dust plugs