@jacadcaps
@Tcheko
@cip060

Thanks very much for the replies.

I tried to have the audio-video capture card recognized to see if the USB HUB was recognized.
Obviously the acquisition card is not recognized but it is normal.
Even connecting it to the PowerBook I get the same.

Instead, the qemu USB HUB and the possible addition of the USB-AUDIO device are recognized

I apologize for the length of the log output
From the Morphos shell:
USBDevLister:

I am not able to read this correctly and understand if it can work but in the end it is a few euros of USB-AUDIO card
maybe it is useful.
In the end it is just curiosity should be tested with a real USB-AUDIO.
Sorry again for the strange request.

USBDevLister:

Skipping 'PCI Root Hub Unit 0-0000-0000-n/a-00' (use SHOWROOT to list)
---------------------------------------------------------------------------
Poseidon DevID : 'QEMU USB Keyboard-0627-0001-68284-pci.2:0d.0-1-00'
Product Name : 'QEMU USB Keyboard' (ID: 0001, Vers: 0000)
Manufacturer : 'QEMU' (Vendor: 0627 (unknown))
Serial Number : '68284-pci.2:0d.0-1' (USBVers: 0200)
Device State : fullspeed connected hasaddress hasdevdesc configured
Device Address : 2 (Port 1 at PCI Root Hub Unit 0)
Class/Sub/Proto : 0/0/0 (<unknown>)
MaxPktSize EP 0 : 8
Power Check : Supply = 500mA, Drain = 100mA
Current Language: English (United States)
Supported Langs : English (United States)
1 configuration(s):
· Config 1 (HID Keyboard)
Attrs : bus-powered remote-wakeup
MaxPower: 100 mA
1 interface(s) for this config:
· Interface 0 (HID interface (0)) (ID: '00-00-03-01-01')
Alternate Setting: 0
Class/Sub/Proto : 3/1/1 (HID (Keyboard))
This interface is bound to hid.class, context 140CD724.
1 endpoint(s) for this interface:
· Endpoint 1 (interrupt <-[ IN)
MaxPktSize: 8
Interval : 10 ms
No alternate settings.
Standard Descriptors:
Desc. 01 (Device), 18 bytes
Desc. 02 (Configuration), 9 bytes (Config 1)
Desc. 04 (Interface), 9 bytes (Iface 0/0, Cfg 1)
Desc. 21 (HID), 9 bytes (Iface 0/0, Cfg 1)
00: 09 21 11 01 00 01 22 3F 00
Desc. 05 (Endpoint), 7 bytes (EP 1, IF 0/0, Cfg 1)
Google: http://www.google.com/search?q=usb+0x0627+0x0001
---------------------------------------------------------------------------
Poseidon DevID : 'QEMU USB Mouse-0627-0001-89126-pci.2:0d.0-2-00'
Product Name : 'QEMU USB Mouse' (ID: 0001, Vers: 0000)
Manufacturer : 'QEMU' (Vendor: 0627 (unknown))
Serial Number : '89126-pci.2:0d.0-2' (USBVers: 0200)
Device State : fullspeed connected hasaddress hasdevdesc configured
Device Address : 3 (Port 2 at PCI Root Hub Unit 0)
Class/Sub/Proto : 0/0/0 (<unknown>)
MaxPktSize EP 0 : 8
Power Check : Supply = 500mA, Drain = 100mA
Current Language: English (United States)
Supported Langs : English (United States)
1 configuration(s):
· Config 1 (HID Mouse)
Attrs : bus-powered remote-wakeup
MaxPower: 100 mA
1 interface(s) for this config:
· Interface 0 (HID interface (0)) (ID: '00-00-03-01-02')
Alternate Setting: 0
Class/Sub/Proto : 3/1/2 (HID (Mouse))
This interface is bound to hid.class, context 1415F64C.
1 endpoint(s) for this interface:
· Endpoint 1 (interrupt <-[ IN)
MaxPktSize: 4
Interval : 10 ms
No alternate settings.
Standard Descriptors:
Desc. 01 (Device), 18 bytes
Desc. 02 (Configuration), 9 bytes (Config 1)
Desc. 04 (Interface), 9 bytes (Iface 0/0, Cfg 1)
Desc. 21 (HID), 9 bytes (Iface 0/0, Cfg 1)
00: 09 21 01 00 00 01 22 34 00
Desc. 05 (Endpoint), 7 bytes (EP 1, IF 0/0, Cfg 1)
Google: http://www.google.com/search?q=usb+0x0627+0x0001
---------------------------------------------------------------------------
Poseidon DevID : 'QEMU USB Hub-0409-55AA-314159-pci.2:0d.0-3-00'
Product Name : 'QEMU USB Hub' (ID: 55AA, Vers: 0101)
Manufacturer : 'QEMU' (Vendor: 0409 (NEC Corp.))
Serial Number : '314159-pci.2:0d.0-3' (USBVers: 0110)
Device State : fullspeed connected hasaddress hasdevdesc configured
Device Address : 4 (Port 3 at PCI Root Hub Unit 0)
Class/Sub/Proto : 9/0/0 (Hub)
MaxPktSize EP 0 : 8
Power Check : Supply = 500mA, Drain = 0mA
Current Language: English (United States)
Supported Langs : English (United States)
This device is bound to hub.class, context 14156E2C.
1 configuration(s):
· Config 1 (Configuration 1)
Attrs : self-powered remote-wakeup
MaxPower: 0 mA
1 interface(s) for this config:
· Interface 0 (Hub interface (0)) (ID: '00-00-09-00-00')
Alternate Setting: 0
Class/Sub/Proto : 9/0/0 (Hub)
1 endpoint(s) for this interface:
· Endpoint 1 (interrupt <-[ IN)
MaxPktSize: 2
Interval : 255 ms
No alternate settings.
Standard Descriptors:
Desc. 01 (Device), 18 bytes
Desc. 02 (Configuration), 9 bytes (Config 1)
Desc. 04 (Interface), 9 bytes (Iface 0/0, Cfg 1)
Desc. 05 (Endpoint), 7 bytes (EP 1, IF 0/0, Cfg 1)
Google: http://www.google.com/search?q=usb+0x0409+0x55AA
---------------------------------------------------------------------------
Poseidon DevID : 'QEMU USB Audio-46F4-0002-1-pci.2:0d.0-3.2-00'
Product Name : 'QEMU USB Audio' (ID: 0002, Vers: 0000)
Manufacturer : 'QEMU' (Vendor: 46F4 (unknown))
Serial Number : '1-pci.2:0d.0-3.2' (USBVers: 0100)
Device State : fullspeed connected hasaddress hasdevdesc configured
Device Address : 5 (Port 2 at QEMU USB Hub)
Class/Sub/Proto : 0/0/0 (<unknown>)
MaxPktSize EP 0 : 64
Power Check : Supply = 100mA, Drain = 0mA
Current Language: English (United States)
Supported Langs : English (United States)
1 configuration(s):
· Config 1 (Audio Configuration)
Attrs : self-powered
MaxPower: 100 mA
2 interface(s) for this config:
· Interface 0 (Audio Device) (ID: '00-00-01-01-04')
Alternate Setting: 0
Class/Sub/Proto : 1/1/4 (Audio Control)
This interface is bound to usbaudio.class, context 14A7041C.
0 endpoint(s) for this interface:
No alternate settings.
· Interface 1 (Audio Output - Disabled) (ID: '01-00-01-02-00')
Alternate Setting: 0
Class/Sub/Proto : 1/2/0 (Audio Streaming)
0 endpoint(s) for this interface:
Alternate settings:
· Interface 1 (Audio Output - 48 kHz Stereo) (ID: '01-01-01-02-00')
Alternate Setting: 1
Class/Sub/Proto : 1/2/0 (Audio Streaming)
1 endpoint(s) for this interface:
· Endpoint 1 (isochronous OUT ]->)
MaxPktSize: 192
Interval : 1 ms
SyncType : synchronous
UsageType : data
Standard Descriptors:
Desc. 01 (Device), 18 bytes
Desc. 02 (Configuration), 9 bytes (Config 1)
Desc. 04 (Interface), 9 bytes (Iface 0/0, Cfg 1)
Desc. 24 (Audio Control Header), 9 bytes (Iface 0/0, Cfg 1)
00: 09 24 01 00 01 2B 00 01 01
Desc. 24 (Audio Input Terminal), 12 bytes (Iface 0/0, Cfg 1)
00: 0C 24 02 01 01 01 00 02 03 00 00 06
Desc. 24 (Audio Feature Unit), 13 bytes (Iface 0/0, Cfg 1)
00: 0D 24 06 02 01 02 01 00 02 00 02 00 07
Desc. 24 (Audio Output Terminal), 9 bytes (Iface 0/0, Cfg 1)
00: 09 24 03 03 01 03 00 02 08
Desc. 04 (Interface), 9 bytes (Iface 1/0, Cfg 1)
Desc. 04 (Interface), 9 bytes (Iface 1/1, Cfg 1)
Desc. 24 (Audio Stream General), 7 bytes (Iface 1/1, Cfg 1)
00: 07 24 01 01 00 01 00
Desc. 24 (Audio Stream Format Type), 11 bytes (Iface 1/1, Cfg 1)
00: 0B 24 02 01 02 02 10 01 80 BB 00
Desc. 05 (Endpoint), 9 bytes (EP 1, IF 1/1, Cfg 1)
Desc. 25 (Audio Generic Endpoint), 7 bytes (EP 1, IF 1/1, Cfg 1)
00: 07 25 01 00 00 00 00
Google: http://www.google.com/search?q=usb+0x46F4+0x0002

Thank you.