hey there,
time for my good deed of the day:
Here is what an USB 2.0 internal header looks like:
https://azerty.nl/product/delock/544919/usb-paneel-10-pin-usb-header-m-naar-usb-v-30-cm?gclid=CjwKCA...Do not confuse them with 19/20 pin USB 3.0 connectors coming from your case's built in connector that requires a different type of connector on your board. Here's an example of those:
https://tweakers.net/i/_vsvcp6GOrtsCLc9_0ompcy16EA=/i/1388658768.jpegSo as the manual says There is one and only one "USB 2.0 internal header" connector present on this board. This sort of connection type is only compatible with matching 9-pin connectors that are commonly found in any of the following:
-brackets that are mounted in a free slot in your pc and provide USB 2.0 A-port connections on the back of your pc (I linked a picture at start). These are not included with this board but can be bought seperately but are unnecessary since there are already integrated usb connections on the back of this board
-some hardware devices that need to communicate intelligently with the computer come with this type of connection. For instance Corsair Ax1200i power supply or aquabus flow sensor. The latter is an example of a connector coming with 4-5pins and needs to be placed on 1 half of the internal USB 2.0 header in the correction orientation
You can NOT use connect ANY USB connector to it. It has to be physically matching the 9-pin block or half of it (4-5pin)
For instance, note that the usb 3.0 connectors coming from your case have a different connector and are NOT compatible, but your case might have additional usb 2.0 (black) connections that have a matching connector that is compatible
Also since this board is progressive instead of including more ports of the older type USB 2.0, it provides 2 newer and different USB 3.0 connections instead so that you have the maximum of possibilities to connect different hardware, but only 1 of each type which you can split using USB hubs.
So If you -just like me by the way- need to connect 2 or more older style USB 2.0 connections to this particular motherboard there are different usb hubs out there to split that 1 precious internal header into multiple (=internal USB hub) such as for instance:
https://www.nzxt.com/products/internal-usb-hubIn such a block of a 9-pin connector there are in fact 2 different rows present, so 2 USB ports. Hence that 1 block of 2 rows is called USB 13 +14. 1 USB 2.0 9-pin connector will thus consume both and make only 1 device work. Here is an illustration that explains the 2 USB ports contained in 1 USB 2.0 9-pin connector:
https://i.stack.imgur.com/qPoTU.jpgThat's the one I'm using. Hope this helps