Lenovo ThinkPad T440s

Compiler flags
See Safe CFLAGS.

USE flags
For the docking station you probably need the package with the   USE flag enabled.

Required packages

 * or for the Wi-Fi firmware
 * for the card reader

nVidia Optimus / Bumblebee support
This configuration allows for switching between integrated Intel GPU and nVidia GPU using primusrun (x11-misc/primus from bumblebee overlay).

Hardware and PCI slots

X.org server configuration

Bumblebee configuration

Secondary X server for nVidia