Telephone Network RJ45 Female to Female Adapter Connector - Walmart.com
Amazon.com: RJ45 Network Splitter Adapter Cable, RJ45 1 Male to 2 Female Socket Port LAN Ethernet Network Splitter Y Adapter Cable Suitable for Super Category 5 Ethernet, Category 6 Ethernet and More : Electronics
Types of RJ45 Connectors | Cat 6 Connectors, Cat 5 Connectors for Ethernet Connectivity | TE Connectivity