Amazon.com: OREI UltraHD 4K @ 60 Hz 1 X 2 HDMI Splitter 1 in 2 Out 2 Port 2: 8-Bit - HDMI 2.0, HDCP 2.0, 18 Gbps, EDID, Duplicate / Mirror 4K Screens - UHDS-102 : Electronics
Shop | StarTech.com HDMI Splitter - 2-Port - 4K 60Hz - HDMI Splitter 1 In 2 Out - 2 Way HDMI Splitter - HDMI Port Splitter (ST122HD202) - video/audio splitter - 2 ports
Atomos Connect 2 4K HDMI to USB Converter ATOMCON002 B&H Photo
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
Philips 3-Device 4K HDMI 2.0 Switch, 3 to 1 HDMI Connection SWV9283A/27 - The Home Depot
4x4 HDMI 2.0 Matrix 4K (Matrix44-HD20)
DisplayPort to HDMI 2.0 Active Cable (M/M) 4K @ 60Hz – VisionTek.com