StarTech.com USB 3.0 to Dual HDMI Adapter - 1x 4K 30Hz &amp; 1x 1080p - External Video &amp; Graphics Card - USB Type-A to HDMI Dual Monitor Display Adapter - Supports Windows Only - Black 3.2 Gen 1 (3.1 Gen 1) USB Type-A HDMI output 3840 x 2160 pixels