Another Lenovo T420
dmidecode -s system-product-name && sudo dmidecode -s system-version 4236NVG ThinkPad T420
lspci -vnn | grep '\''[030[02]\]' 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) 01:00.0 VGA compatible controller [0300]: nVidia Corporation Device [10de:1057] (rev a1) (prog-if 00 [VGA controller])
Another Lenovo T420
dmidecode -s system-product-name && sudo dmidecode -s system-version
4236NVG
ThinkPad T420
lspci -vnn | grep '\''[030[02]\]'
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
01:00.0 VGA compatible controller [0300]: nVidia Corporation Device [10de:1057] (rev a1) (prog-if 00 [VGA controller])