Hey @jakaskerl,
here is a list of all commands I have executed including their output.
$ sudo systemctl stop ModemManager
$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 5986:2127 Bison Electronics Inc. HD Camera
Bus 003 Device 003: ID 06cb:009b Synaptics, Inc.
Bus 003 Device 004: ID 1038:113a SteelSeries ApS SteelSeries KLC
Bus 003 Device 005: ID 8087:0033 Intel Corp. AX211 Bluetooth
Bus 003 Device 006: ID 062a:4102 MosArt Semiconductor Corp. Wireless Mouse
Bus 003 Device 007: ID 05c6:901d Qualcomm, Inc. OAK4-D R7
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
$ adb devices
* daemon not running; starting now at tcp:5037
* daemon started successfully
List of devices attached
8d2b4eb5 device
$ adb root
$ adb shell
/ # ls -al
total 148
drwxr-xr-x 31 root root 4096 Jan 1 1970 .
drwxr-xr-x 31 root root 4096 Jan 1 1970 ..
drwxr-xr-x 3 root root 4096 Mar 9 2018 WEBSERVER
drwxr-xr-x 2 root root 4096 Mar 9 2018 bin
drwxr-xr-x 2 root root 4096 Mar 9 2018 boot
drwxr-xr-x 3 root root 16384 Jan 1 1970 bt_firmware
-rw-r--r-- 1 leprop leprop 273 Mar 9 2018 build.prop
drwxr-xr-x 1 root root 4096 Jan 1 1970 cache
drwxr-xr-x 1 root root 4096 Jun 18 15:41 data
drwxr-xr-x 19 root root 7560 Jan 1 1970 dev
drwxr-xr-x 5 root root 4096 Jan 1 1970 dsp
drwxr-xr-x 1 root root 4096 Jun 18 14:21 etc
drwxr-xr-x 4 root root 16384 Jan 1 1970 firmware
drwxr-xr-x 1 root root 4096 Jan 1 1970 home
drwxr-xr-x 11 root root 4096 Mar 9 2018 lib
drwx------ 2 root root 4096 Jan 1 1970 lost+found
drwxr-xr-x 9 root root 4096 Mar 9 2018 media
drwxr-xr-x 3 root root 4096 Mar 9 2018 mnt
drwxr-xr-x 3 root root 4096 Mar 9 2018 opt
drwxr-xr-x 16 root root 4096 Jun 18 14:21 overlay
drwxr-xr-x 6 root root 4096 Jan 1 1970 persist
dr-xr-xr-x 534 root root 0 Jan 1 1970 proc
drwxr-xr-x 2 root root 4096 Mar 9 2018 res
drwxr-xr-x 18 root root 520 Jan 1 1970 run
drwxr-xr-x 4 root root 4096 Mar 9 2018 sbin
lrwxrwxrwx 1 root root 11 Mar 9 2018 sdcard -> /mnt/sdcard
drwxr-xr-x 1 root root 40 Jan 1 1970 srv
dr-xr-xr-x 13 root root 0 Jan 1 1970 sys
drwxr-xr-x 3 root root 4096 Mar 9 2018 system
-rw-r--r-- 1 root root 7 Mar 9 2018 target
drwxrwxrwt 7 root root 200 Jan 1 1970 tmp
drwxr-xr-x 13 root root 4096 Mar 9 2018 usr
drwxr-xr-x 9 root root 4096 Mar 9 2018 var
drwxr-xr-x 3 root root 4096 Mar 9 2018 vendor
$ adb reboot edl
$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 5986:2127 Bison Electronics Inc. HD Camera
Bus 003 Device 003: ID 06cb:009b Synaptics, Inc.
Bus 003 Device 004: ID 1038:113a SteelSeries ApS SteelSeries KLC
Bus 003 Device 005: ID 8087:0033 Intel Corp. AX211 Bluetooth
Bus 003 Device 006: ID 062a:4102 MosArt Semiconductor Corp. Wireless Mouse
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
$ adb devices
List of devices attached
$ sudo dmesg
[ 5403.154160] usb 3-9: USB disconnect, device number 7
[ 5403.929085] usb 3-9: new high-speed USB device number 8 using xhci_hcd
[ 5404.064352] usb 3-9: New USB device found, idVendor=05c6, idProduct=901d, bcdDevice= 5.15
[ 5404.064357] usb 3-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 5404.064359] usb 3-9: Product: OAK4-D R7
[ 5404.064360] usb 3-9: Manufacturer: Luxonis
[ 5404.064361] usb 3-9: SerialNumber: 8d2b4eb5
[ 5443.770018] usb 3-9: USB disconnect, device number 8
