Why do you keep ignoring what people are telling you ?
1) you need to load USBD in any case: BASEDEV=USBD.SYS
2) you have one OHCI host controller, you need to load BASEDEV=USBOHCD.SYS
3) if you enable USB 2.0 in the VBOX gui, you need to add yet another driver: BASEDEV=USBEHCD.SYS
4) you have to load USBD.SYS before you load USBHID.SYS, else USBHID.SYS is not going to load
5) you neither need USBHID.SYS, nor USBKBD.SYS nor USBMOUSE.SYS becauseVBOX emulates a PS//2 mouse and keyboard
6) you do not need to load USBUHCD.SYS, never, ever
You can now continue fumbling around with your system or you can do it right.
Lars, I'm swimming among all your indications posted which I entirely appreciate. I'm applying time by time everything suggested and providing feedback after that, as you could understand I'm not confortable working with this system but I like it, and thanks to this forum members help have successfully implemented something like: WPS printing system, Vbox guest addition, Firefox 45.5.9, Videolan 3.02, rmp-yum package manager, video drivers additional resolution mode and other minor implementations. This said just to tell that I can get almost everywhere with a little bit of patience, although limited both by language and knowledge filters .
Anyhow -back to the topic- , my config.sys was already modified as per you indication, I repeat here below the lines, maybe you still find something wrong :
REM BASEDEV=USBUHCD.SYS
BASEDEV=USBOHCD.SYS
BASEDEV=USBEHCD.SYS
BASEDEV=USBD.SYS /REQ:USBUHCD$
BASEDEV=USBHID.SYS
REM BASEDEV=USBMSD.ADD
REM BASEDEV=USBCDROM.ADD
BASEDEV= USBMSD.ADD /REMOVABLES:5 /FLOPPIES:0 /CDS:1
REM DEVICE=C:\OS2\BOOT\USBKBD.SYS
REM DEVICE=C:\OS2\apps\AMOUSE\AMOUSE.SYS
REM DEVICE=C:\OS2\BOOT\USBMOUSE.SYS
REM DEVICE=C:\OS2\BOOT\USBCOM.SYS
here below I attach what booting messages say (anyway it boots regularly), what HCIMONIT shows, and what USBCFG shows (before the panel appears I have to click many times OK on the GTDESK.DLL error message, although it is present in C:\OS2\DLL as it should be).
Thank you