A:Answer Yes. All of the HDMI ports are 2.0. Here are the specifications on each port per Vizio's website:
HDMI 1-4 Tech Specs600MHz pixel clock rate: 2160p@60fps, 4:4:4, 8-bit | 2160p@60fps, 4:2:2, 12-bit
2160p@60fps, 4:2:0, 12-bit
HDMI 5 Tech Specs370MHz pixel clock rate: 2160p@60fps, 4:2:2, 8-bit | 2160p@60fps, 4:2:0, 10-bit
1080p@120fps, 4:4:4, 10-bit | 1080p@120fps, 4:2:2, 12-bit
I believe HDMI 5 is slightly different because it it is intended to be used with game consoles and allows for a faster response time.