Amazon.com: HDMI Splitter 1 in 4 Out 4K, HBAVLINK 4 Port HDMI Splitter Powered Video Splitter 4 Outputs w/HDMI Cord+ AC Adapter, Duplicate/Mirror Screens for Fire Stick/Roku/DirecTV/Cable Box/Security Cameras : Electronics
Monoprice Blackbird 4K HDMI 2x4 Splitter and Switch - Monoprice.com
HDMI-compatible Splitter 1 in 2 Out, 4K HDMI-compatible Splitter for Dual Monitors Duplicate/Mirror Only, HDMI-compatible Splitter 1 to 2 Amplifier for Full HD 1080P 4K For HDTV DVD Video 1 In 2
4 Port HDMI Splitter 4K Supported, 3D Output - Ellipse Security, Inc.
Monoprice Blackbird 4K HDMI 2x4 Splitter and Switch - Monoprice.com
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-HDR 1x4 Splitter with Audio Extractor (PRO-HDRsplit4P-Aud)