Amazon.com: OREI HDMI Splitter 1 in 2 Out - 1x2 HDMI Display Duplicate/Mirror - Powered Splitter Full HD 1080P, 4K @ 30Hz (One Input To Two Outputs) - USB Cable Included -
4K 30HZ HDMI Splitter 1 in 2 out 3.3ft Silver Gray
StarTech 4K HDMI 2-Port Video Splitter - Powered by USB or Power Adapter - Walmart.com
avedio links 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
Active HDMI Splitter Powered Amplifier 1 to 2 4K 2160P 1080P Screen Mirroring 845832033716 | eBay
OREI UHDS-108: 1x8 Ultra HD 4K Splitter - Bombay Electronics