Package-RJ45 Port Dust Cover Anti-dust Caps, Black Silicone TPE rubber, 20 Pack | Installation-Easily Insert into your RJ45 Ports to protect your network switches and fiber optic devices, and easy to remove with tab. | Application-RJ45 Cover fits into all Ethernet Port RJ45 and it protects the RJ45 female jack from dust and oxygen

【Package】SFP SFP+ SFP28 Port Dust Cover Anti-dust Caps, Black Silicone TPE rubber, 50 Pack | 【Installation】Easily Insert into your LC Ports to protect your network switches and fiber optic devices, and easy to remove with tab. | 【Application】Dust Cover for SFP/XFP/SFP+ /SFP28 Fiber Optical Transceiver and Cable Dust Cap for LC Duplex Port. the most inexpensive way to protect the slot of the open ports on switches, routers, network cards and media converters away from dust and contaminants. | 【Why to USE】Protecting SFP SFP+ SFP28 Transceivers from dust, dirt, and other contaminants. Keeping Transceivers clean by using the dust cover when an SFP module is not in use. Preventing potential damage or disruptions caused by dust and debris. Network administrators can help prolong the lifespan and optimize the performance of their networking equipment. | 【Guarantee】We offer a 5-year warranty and free repair or replacement for modules with manufacturing defects, as well as a 60-day exchange policy and a 30-day refund policy for compatibility issues or other reasons.