x200 tablet

https://libreboot.org/docs/install/x200_external.html

root@x200:~# dmidecode | grep ROM\ Size
        ROM Size: 8192 kB

root@x200:~# ifconfig eth0
eth0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether 00:1f:16:0c:2a:41  txqueuelen 1000  (Ethernet)

x230 tablet

https://www.ericholzbach.net/blog/x230_coreboot/

https://blog.noq2.net/corebooting-thinkpad-x230.html

http://zmatt.net/unlocking-my-lenovo-laptop-part-3/