Widely UsedRJ45 Port Dust Covers are used to cover the opening RJ45 LAN port on your network devices such as Ethernet networks cards and media converters, Patch Panels and computer devices. They are widely compatible with various devices such as routers, switches, computers, and network wall outlets. PACKAGE100PCS of RJ45 LAN Port Dust Covers, Black Silicone,RJ45 LAN Port Type. Which are made of Black Silicone TPE rubber soft and flexible material. These materials provide flexibility and durability for snug fit.