The dmidecode command reads the system DMI table to display hardware and BIOS information of the server. Apart from getting current configuration of the system, you can also get information about maximum supported configuration of the system using dmidecode. For example, dmidecode gives both the current RAM on the system and the maximum RAM supported by the system.

Here are some sample command use

Find baseboard information

List info about the bios

And here is a list of valid keywords types

As always; I hope this helps some of you. For me these are just notes so I have a place to turn to for reminders.