CM4 - USB pinheader

The compute module IO board features a pinheader for 2 extra USB ports.
I do not know if there is any software to already to support this.

If there isn’t, this would be a piece on my wish list. It would give the IO board a USB for the mouse, one for the keyboard and 2 more for a memory stick and maybe an external cd drive.

See: https://www.megekko.nl/productimg/156192/midi/1_Delock-83292-USB-kabel-Pinheader-female-2-x-USB-2-0-type-A-female-20cm.jpg

Looking at the datasheet, it’s just two of the four ports supported by the onboard USB hub. Two are provided on the board, and the other two can be added later.

Note, however, that I would imagine that all of this eventually goes through the single physical USB port on the Pi itself, so while you can add all sorts of new things, it is no different than daisy chaining external hubs. More connectivity, but everything will be sharing the same bus and the same bandwidth.

No software is required, just connect to the header.

The compute module IO board features a pinheader for 2 extra USB ports.
I do not know if there is any software to already to support this.

Just plug it in. I had to bend out one of the pins. The one nearest the edge of the board. All the adapters I had are 9 pin.

Don’t bend the pin put a hole in the plastic header block

I added a 6-pin header plug with eextended pins, then cut off the sixth pin and bent the fifth pin outwards and soldered a micro USB breakout board to that. This lifted it nicely above the Ethernet socket and I used a flexible micro B to USB A cable to connect to a 4-port USB hub. You can just see it here

Ok, thanks for the advice.
I am still a bit wondering about which direction to attach it to. There seems to be little online documentation about which pin does what, which one the grounds are, or in which direction the pins need to be plugged.

There is also this 4 pin cable header: https://www.alternate.be/p/o/r/DeLOCK_USB_Pin_header_female___USB_A_2_0_female_adapter@@rduccf.jpg
but since there are 5 pins per row I don’t know which ones to choose.
Does anyone know which pin does what?

There is also this 4 pin cable header

I’m not sure it’s a good idea to try plugging in random cables…

Does anyone know which pin does what?

The CM4 I/O board datasheet (a quick Google will find it) contains the schematics. It’s all there, you just need to know how to read it.

For you, I’ve clipped out the relevant bit:

Many thanks, these schematics make it much more clearer.
If I read it correctly, pins 9 and 10 are the ones closest to the edge of the board, and are not in use?

If I read it correctly, pins 9 and 10 are the ones closest to the edge of the board, and are not in use?

Usually, because the pin marked with a square is by the text “Exte”(rnal USB). However to be certain I’d whip out a multimeter and do a continuity test between the two that ought to be Gnd and anything that should also be, like one of the socket shields.