Is it ok to use ethernet splitter?

Can I use an Ethernet splitter to split my Internet? - Quora

RJ45 Ethernet Splitter Adapter VCELINK

Which way do I use the 2-way splitter for ethernet to router and then 2 rooms? - Quora

StarTech.com 2 to 1 RJ45 Splitter Cable Adapter Network splitter RJ 45 M RJ 45 F Connect two 10100 Ethernet devices to a single Cat5Cat5e cable drop - Office Depot

Ethernet Switch vs. Hub vs. Splitter: What's the Difference? - Make Tech Easier

networking - Can I use a ethernet splitter to connect a router to two devices? - Super User

Plastic Ethernet Splitter Cable Adapter RJ45 Ethernet Cable Splitter Adapter

Ethernet Splitter 1 to 2 RJ45 Network Adapter, Suitable for Computer/Router/Network Box with RJ45 Interface, Compatible with Cat5/5e/6/7(Only one Output Port is Working at The Same time) : Electronics

There's NO WAY this works - Debunking bogus network splitters.

Ethernet Splitter 1 To 4 RJ45 LAN Port Internet Cable Adapter Connector CAT5 6 7

2pcs Ethernet Splitter Cable Adapter RJ45 Ethernet Cable Splitter Adapter