Amazon.com: Cable Matters USB to 4-Port Gigabit Ethernet Switch for Network Sharing with TV, Laptop, Gaming Console (USB Ethernet Splitter, USB Network Switch, USB to Ethernet Adapter, USB Gigabit Switch) : Electronics
4-Port Industrial RS-232 to Ethernet Data Gateway TCP/IP - Coolgear
Fiber Transceiver 4 Port Ethernet Transmission & 2-Port Optical Fiber Switch SM | eBay
Amazon.com: Ethernet Wall Plate 4 Port - Cat6 Ethernet Cable Wall Plate Female to Female - White : Electronics