Usefull links:

1. How to identify an unknown device:
To identify the device, you need the "Vendor ID (VEN_xxxx)" (1) and the "Device ID (DEV_xxxx)" (2) which are contained in the PNP Device ID then visit www.pcidatabase.com

2. How to identify Vendor of a MAC address:
Visit www.macvendorlookup.com or www.hwaddress.com and paste MAC - HW address

2. How to generate random passwords:
Visit ww.pctools.com/guides/password/and generate random password