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
Techly IDATA-HDMI-4K4 | Techly IDATA-HDMI-4K4 video splitter 4x HDMI
USB 3.0 - 4x HDMIディスプレイ変換アダプタ/クアッドモニタ - USBビデオアダプタ | StarTech.com 日本