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USB 2.0 and Ethernet Hub - 3 USB Ports and 1 Ethernet : ID 2909 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits
RJ45 Ethernet Splitter Adapter, EEEkit USB to RJ45 Port Dual Female 1 to 2 LAN Ethernet Network Splitter Connector Adapter Support Cat5 Cat5e Cat6 Cat6e Cat7 Ethernet Cable, Black - Walmart.com
5 in 1 USB C Hub with Ethernet & 4K HDMI | CableCreation
Amazon.com: RJ45 Network Splitter Adapter,Wuedozue 1 to 2 Dual Female USB to RJ45 Port with USB Power Cable LAN Interface Ethernet Socket Connector 8P8C Extender Plug Go Online Simultaneously for Cat6, Cat7 :
Ethernet physical layer - Wikipedia
What Is an Ethernet Port?
Type-C 2-in-1 Aluminum USB Hub with Ethernet - Satechi
Rj45 Network 1 To 2 Port Ethernet Adapter Splitter, Rj45 1 Male To 2 Female Lan Ethernet Splitter Adapter Cable Suitable Super - Data Cables - AliExpress
RJ45 LAN Ethernet Splitter Adapter 1 to 2 Way Ports Cable Network Plug Connector | eBay
uni® USB Hub with 1G Ethernet Adapter, USB 3.0 Hub Gigabit Ethernet RJ45 Adapter, USB Adaptor, Perfect Size, 5 Gbps | Aluminum | Ultra-Slim & Portable