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 60Hz USB-C to HDMI 2.0 and VGA Adapter with MST Dual Monitor
Powerology HDMI Mirroring Adaptor: 1080P USB-C in Black
1x2 HDMI Full UHD 4K60 18Gb Distribution Amplifier Splitter (YUV:444)
Rybozen 4K Audio Video Capture Card, USB 3.0 HDMI Video Capture Device – rybozen.us
Monoprice Blackbird PRO H.265 HDMI over IP Kit, Splitter System and Extender Up to 150m, 1080p - Monoprice.com
Amazon.com: HDMI Splitter with HD HDMI Cable, 1 in 2 Out 4K HDMI Splitter for Full HD 4K@30HZ 1080P 3D Splitter (1 HDMI Source to 2 HDMI Displays) : Electronics