dmidecode

Dmidecode reports information about your system's hardware as described in your system BIOS. This command gives you vendor name, model name, serial number, BIOS version, asset tag as well as a lot of other details. This will include usage status for the CPU sockets, expansion slots (e.g. AGP, PCI, ISA) and memory module slots, and the list of I/O ports (e.g. serial, parallel, USB). A pretty useful command for sysadmins to prepare their system inventory.

# which dmidecode
/usr/sbin/dmidecode
# dmidecode 2.2
SMBIOS 2.3 present.
87 structures occupying 3227 bytes.
Table at 0x000FA920.
Handle 0xDA00
        DMI type 218, 11 bytes.
        OEM-specific Type
                Header And Data:
                        DA 0B 00 DA D9 00 17 00 0E 20 00
Handle 0x0000
        DMI type 0, 20 bytes.
        BIOS Information
                Vendor: Dell Computer Corporation
                Version: A05
                Release Date: 09/22/2006
                Address: 0xF0000
                Runtime Size: 64 kB
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