Elantech Thouchpad Fixes

Enable two finger tap middle / 3rd mouse button and three finger tap right mouse button emulation

Synaptics Thouchpad Fixes

Enable middle / 3rd mouse button emulation:
HKEY_LOCAL_MACHINE\Software\Synaptics\SynTP\Defaults
DWORD: HasBothButtonFeature
VALUE: 1

Enable  "Disable internal pointing device when external USB device is attached" function:
HKEY_CURRENT_USER\Software\Synaptics\SynTPEnh
HKEY_LOCAL_MACHINE\Software\Synaptics\SynTPEnh
DWORD: DisableIntPDFeature
VALUE: 13

Download fixes (save as .reg)