26 AMD socket AM4 motherboards review: the best boards for Ryzen

Which manufacturer offers the best base for your Ryzen build?

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Connectivity: USB

USB 3.1 connectivity is very common on socket AM4 motherboards. The majority features two USB 3.1 ports, Gigabyte even included four ports on two models. A USB 3.1 frontheader is limited to high-end models, for now. Unfortunately there are very few cases that use this standard, which could be explained by the fact that apparently the required cable is quite expensive while it also cannot be too long. The usage cases of this connector are quite limited for now.

It's worth noting that pretty much all manufacturers have opted for USB 3.1 controllers from ASMedia, despite the fact that the X370 and B350 chipsets have built-in support for USB 3.1. From what we understand the output signal from these ports in the chipset is quite weak, which means that they won't make it to the I/O panel on the other side of the board without any amplifiers. A separate USB 3.1 controller is simply cheaper in this case. We do see that the chipset port is sometimes used for a frontheader. 

ASUS RoG Crosshair VI Hero
The ASUS Crosshair VI Hero stands out due to its plethora of USB ports.

In the table below we've only included the ports on the I/O panel on the back; all boards also feature at least one USB 2.0 and one USB 3.0 header for internal connections. The ASUS Crosshair VI Hero is without a doubt the board with the most USB connectors, with 16 USB ports on the back panel.

  USB 2.0 USB 3.0 USB 3.1 USB 3.1 front
ASRock AB350M Pro4 2 5 0 Nee
ASRock Fatal1ty AB350 Gaming ITX/ac 2 4 0 Nee
ASRock Fatal1ty X370 Gaming ITX/ac 2 4 0 Nee
ASRock Fatal1ty X370 Gaming K4 0 6 2 Nee
ASRock Fatal1ty X370 Professional Gaming 0 6 2 Nee
ASRock X370 Killer SLI 0 8 0 Nee
ASRock X370 Taichi 0 6 2 Nee
ASUS Prime X370-Pro 0 6 2 Ja
ASUS ROG Strix B350-F Gaming  2 4 2 Nee
ASUS ROG Strix X370-F Gaming 2 6 2 Ja
ASUS ROG Crosshair VI Hero 4 8 2 Ja
ASUS ROG Crosshair VI Extreme 4 6 2 Ja
Biostar X370GT3 0 4 2 Nee
Gigabyte A320MA-M.2 2 3 1 Nee
Gigabyte AB350 Gaming 3 1 4 2 Nee
Gigabyte AB350N-Gaming WiFI 2 4 2 Nee
Gigabyte AX370 Gaming K3 0 6 2 Nee
Gigabyte Aorus AX370 Gaming 5 0 6 4 Nee
Gigabyte Aorus AX370 Gaming K7 0 6 4 Nee
MSI B350M Mortar 2 4 0 Nee
MSI B350 Tomahawk 2 4 0 Nee
MSI B350 Gaming Pro Carbon 2 4 2 Nee
MSI X370 SLI Plus 2 4 2 Nee
MSI X370 Krait Gaming 2 4 2 Nee
MSI X370 Gaming Pro Carbon 2 4 2 Nee
MSI X370 XPower Gaming Titanium 3 4 2 Ja

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