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`dmidecode` can do this. Here's an example output from my system:

```shell
# dmidecode --type 2
Getting SMBIOS data from sysfs.
SMBIOS 3.1.1 present.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: ASUSTeK COMPUTER INC.
        Product Name: PRIME B450-PLUS
        Version: Rev X.0x
        Serial Number: <redacted>
        Asset Tag: Default string
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis: Default string
        Chassis Handle: 0x0003
        Type: Motherboard
        Contained Object Handles: 0

```

Type 2 corresponds to [`Baseboard`](https://man.archlinux.org/man/dmidecode.8#DMI_TYPES).