These GPUs use an MXM connector, not M.2. I've got an HP Z2 Mini unit which also uses MXM for its GPU, and is upgradable. Due to the cooling requirements of a

These GPUs use an MXM connector, not M.2. I've got an HP Z2 Mini unit which also uses MXM for its GPU, and is upgradable. Due to the cooling requirements of a GPU, MXM modules are often pretty thick though, so would probably make the whole laptop thicker. You also have to consider how the heatsink & heatpipes for a GPU would attach to the GPU. https://en.wikipedia.org/wiki/Mobile_PCI_Express_Module https://en.wikipedia.org/wiki/Mobile_PCI_Express_Module