Amazon.com: StarTech.com USB 3.0 to 4x HDMI Adapter - External Video & Graphics Card - USB Type-A to Quad HDMI Display Adapter Dongle - 1080p 60Hz - Multi Monitor Converter - Windows
Livestream Studio One (4 HDMI) - Compact 4 Input Desktop Encoder / Switcher
Amazon.com: StarTech.com USB 3.0 to 4x HDMI Adapter - External Video & Graphics Card - USB Type-A to Quad HDMI Display Adapter Dongle - 1080p 60Hz - Multi Monitor Converter - Windows