HDMI Splitter 1 in 2 Out, 4K HDMI Splitter for Dual Monitors Duplicate/Mirror Only, 1x2 HDMI Splitter 1 to 2 Amplifier for Full HD 1080P 3D with HDMI Cable (1 Source onto 2 Displays) - Newegg.com
4K@60HZ HDMI Splitter, HDMI Splitter 1 In 2 Out, HDMI2.0b Splitter for Dual Monitors 【Only Duplicate/Mirror Screens, Not Extend】Support HDCP2.2, RGB 4", TV & Home Appliances, Electrical, Adaptors & Sockets on Carousell
DISPLAYPORT TO TWO HDMI DISPLAYS 1x2 SPLITTER (R06-SPL-102-HD) - YouTube
Do HDMI Splitters Work for Dual Monitors? - Pointer Clicker
How to Setup Dual Monitors With HDMI Splitter in 2022
Can I use an HDMI splitter to extend, not duplicate, my laptop screen across two monitors? - Quora