Question Does this USB header only support one USB port?

[Amaar Ebrahim]

Hi all,

I am in the process of upgrading my system. As part of the overhaul, I plan on buying a new motherboard (MSI PRO B760-P WIFI). I will have to re-wire my case's front panel cables to it. My case has two USB 3.1 Gen 1 ports on its front panel, and I'd like to still use them as USB 3.1 ports when I install the new motherboard. On my current motherboard (MSI Z270-A PRO), the USB header that these ports are connected to is a 19-pin fixture labeled "JUSB3~4" on the board's datasheet (which can be downloaded here). The USB header that these ports would connect to on the new motherboard is called "JUSB2" according to its datasheet. This header is 19-pins, but the fact that its name is suffixed with a single number rather than two numbers tells me that only one USB will work, not two. It makes sense that my current motherboard's USB header is called "JUSB3~4" because it implies that there's a JUSB3 connected to one of my two front panel USB 3.1 ports and a JUSB4 connected to the other.

Am I correct in assuming the JUSB2 header on the motherboard that I am considering will only support one USB because of its numbering, or does the numbering have nothing to do with the number of ports it supports?

Thanks everyone.

 

[Hellfire13]

You can probably use a Y Splitter to connect two ports with one header.

 

[Amaar Ebrahim]

You can probably use a Y Splitter to connect two ports with one header.

I'm more concerned with knowing whether the one header can even support two ports.

If the header does support two ports, wiring will not be an issue since I would just connect the case's 19-pin cable (which is connected to both front panel USB ports) to the motherboard's 19-pin USB header. If the header does not, then I will need to use a splitter at the case's 19-pin cable and connect each section to different headers.

 

[hotaru.hino]

In the first manual, JUSB3-4 refers to two separate 19-pin USB 3.x headers. They're grouping them because they have the same USB capabilities, as opposed to JUSB1-2.

USB 3.x headers support 2 ports as a single USB 3.x port only needs 9 pins. So you can connect 2 USB 3.x ports on that JUSB2 header.

 

[Amaar Ebrahim]

In the first manual, JUSB3-4 refers to two separate 19-pin USB 3.x headers. They're grouping them because they have the same USB capabilities, as opposed to JUSB1-2.

USB 3.x headers support 2 ports as a single USB 3.x port only needs 9 pins. So you can use connect USB 3.x ports on that JUSB2 header.

Makes perfect sense. Thank you!