USB

USB-C Flash drive

card825gen2:~$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M

USB3 flash drive plugged into blue host connector closest to circuit board

card825gen2:~$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M

USB3 flash drive plugged into blue host connector farther from circuit board

root@imx8mq-var-dart:~# lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 2: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 480M
        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M

USB2 flash drive plugged into black USB2 connector

root@imx8mq-var-dart:~# lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
        |__ Port 4: Dev 6, If 0, Class=Mass Storage, Driver=usb-storage, 480M

USB2 flash drive plugged into blue host connector closest to circuit board

root@imx8mq-var-dart:~# lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 7, If 0, Class=Mass Storage, Driver=usb-storage, 480M
        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M

USB2 flash drive plugged into blue host connector farther from circuit board

root@imx8mq-var-dart:~# lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 2: Dev 8, If 0, Class=Mass Storage, Driver=usb-storage, 480M
        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M

Sysfs nothing plugged into 825 USB

root@imx8mq-var-dart:/sys/bus/usb/devices# ls
1-0:1.0  1-1  1-1.3  1-1.3:1.0  1-1:1.0  2-0:1.0  2-1  2-1:1.0  3-0:1.0  4-0:1.0  usb1  usb2  usb3  usb4

USB-C flash drive plugged in

root@imx8mq-var-dart:/sys/bus/usb/devices# ls
1-0:1.0  1-1  1-1.3  1-1.3:1.0  1-1:1.0  2-0:1.0  2-1  2-1:1.0  3-0:1.0  4-0:1.0  4-1  4-1:1.0  usb1  usb2  usb3  usb4

root@imx8mq-var-dart:/sys/bus/usb/devices# cat /sys/bus/usb/devices/4-1/product
 SanDisk 3.2Gen1

USB-3 flash drive plugged into blue host port closest to circuit board

root@imx8mq-var-dart:/sys/bus/usb/devices# ls
1-0:1.0  1-1.1      1-1.3      1-1:1.0  2-1      3-0:1.0  usb1  usb3
1-1      1-1.1:1.0  1-1.3:1.0  2-0:1.0  2-1:1.0  4-0:1.0  usb2  usb4

root@imx8mq-var-dart:/sys/bus/usb/devices# cat /sys/bus/usb/devices/1-1.1/product
Cruzer

USB-3 flash drive plugged into blue host port farther from circuit board

root@imx8mq-var-dart:/sys/bus/usb/devices# ls
1-0:1.0  1-1.2      1-1.3      1-1:1.0  2-1      3-0:1.0  usb1  usb3
1-1      1-1.2:1.0  1-1.3:1.0  2-0:1.0  2-1:1.0  4-0:1.0  usb2  usb4

root@imx8mq-var-dart:/sys/bus/usb/devices# cat /sys/bus/usb/devices/1-1.2/product
Cruzer

USB-2 flash drive plugged into black USB-2 host port

root@imx8mq-var-dart:/sys/bus/usb/devices# ls
1-0:1.0  1-1.3      1-1.4      1-1:1.0  2-1      3-0:1.0  usb1  usb3
1-1      1-1.3:1.0  1-1.4:1.0  2-0:1.0  2-1:1.0  4-0:1.0  usb2  usb4

root@imx8mq-var-dart:/sys/bus/usb/devices# cat /sys/bus/usb/devices/1-1.4/product
Mass storage

USB-3 flash drive plugged into black USB-2 host port

root@imx8mq-var-dart:/sys/bus/usb/devices# ls
1-0:1.0  1-1.3      1-1.4      1-1:1.0  2-1      3-0:1.0  usb1  usb3
1-1      1-1.3:1.0  1-1.4:1.0  2-0:1.0  2-1:1.0  4-0:1.0  usb2  usb4


root@imx8mq-var-dart:/sys/bus/usb/devices# cat /sys/bus/usb/devices/1-1.4/product
Cruzer

root@imx8mq-var-dart:/sys/bus/usb/devices# cat /sys/bus/usb/devices/1-1.4/product
 SanDisk 3.2Gen1