dmidecode

dmidecode - dump DMI (SMBIOS) table contents in a human-readable format.

Show BIOS information:

dmidecode -t bios

Show system information:

dmidecode -t system

Show baseboard information:

dmidecode -t baseboard

Show Chassis information:

dmidecode -t chassis

Show processor information:

dmidecode -t processor

Show memory information:

dmidecode -t memory

Show cache information:

dmidecode -t cache

Show connector information:

dmidecode -t connector

Show slot information:

dmidecode -t slot