I think you are right. I’ve checked with and without the card and compared the output of dmesg
and lsusb
. The amount of devices did not change.
Without the card
root@turris:~# dmesg | grep USB
[ 4.821725] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.848241] orion-ehci d005e000.usb: new USB bus registered, assigned bus number 1
[ 4.890347] orion-ehci d005e000.usb: USB 2.0 started, EHCI 1.00
[ 4.896846] hub 1-0:1.0: USB hub found
[ 5.280342] usb 1-1: new high-speed USB device number 2 using orion-ehci
[ 5.481263] hub 1-1:1.0: USB hub found
[ 6.814916] xhci-hcd d0058000.usb: new USB bus registered, assigned bus number 2
[ 6.838345] hub 2-0:1.0: USB hub found
[ 6.851382] xhci-hcd d0058000.usb: new USB bus registered, assigned bus number 3
[ 6.858923] xhci-hcd d0058000.usb: Host supports USB 3.0 SuperSpeed
[ 6.874674] hub 3-0:1.0: USB hub found
root@turris:~# lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0424:2422 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
root@turris:~#
With the card:
root@turris:~# dmesg | grep USB
[ 4.820937] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.847270] orion-ehci d005e000.usb: new USB bus registered, assigned bus number 1
[ 4.890415] orion-ehci d005e000.usb: USB 2.0 started, EHCI 1.00
[ 4.896914] hub 1-0:1.0: USB hub found
[ 5.270410] usb 1-1: new high-speed USB device number 2 using orion-ehci
[ 5.471297] hub 1-1:1.0: USB hub found
[ 6.734716] xhci-hcd d0058000.usb: new USB bus registered, assigned bus number 2
[ 6.758208] hub 2-0:1.0: USB hub found
[ 6.771406] xhci-hcd d0058000.usb: new USB bus registered, assigned bus number 3
[ 6.779039] xhci-hcd d0058000.usb: Host supports USB 3.0 SuperSpeed
[ 6.794397] hub 3-0:1.0: USB hub found
root@turris:~# lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0424:2422 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
root@turris:~#