STM32F405 using dual USB host

[Lowlanders]

Hi,
I'm new to the ST32 world and would like to know if this is possible before I start experimenting with an STM32F405:

Is it possible to use both USB interfaces as a USB host at the same time (only full speed and low speed, no high speed is required)
For example, to connect a mouse to one USB port and a keyboard to the other USB port.

If so, can I just use D+/D- of the ports, or do you need additional external components for the high-speed port also when I use it in HS/LS mode?

If that works, is there any example software to use 2 HID hosts in parallel? Is there an evaluation board that has USB ports?

[Andrew Neil · Accepted solution]

AN4879, Introduction to USB hardware and PCB guidelines using STM32 MCUs:

https://www.st.com/resource/en/application_note/an4879-introduction-to-usb-hardware-and-pcb-guidelines-using-stm32-mcus-stmicroelectronics.pdf

via: https://www.st.com/en/microcontrollers-microprocessors/stm32f405zg.html#documentation

[Lowlanders]

Perfect, thanks!

[FBL]

Hi @Lowlanders 

It is not possible to connect more than one device to the same USB port configured as a host. Actually, hub operation is not supported.

[Lowlanders]

Yes, I know. One device per USB port. So I should be able to connect a total of 2 devices to the ST32F405.
This's all I want. And I hope that I can connect LS and FS devices without any problems.