The MSI GS30 Shadow is a particularly thin and light gaming laptop. With the main goal of portability, the manufactured to decided delegate the high-performance GPU processing required in modern games to an external dock.
http://www.notebookcheck.net/MSI-GS30-Shadow-gaming-notebook-officially-announced.134518.0.html
You have this tagged as Broadwell[1]. However the integrated GPU (Iris Pro 5200[2]) clearly indicates that the CPU is in fact the fourth generation Haswell[2].
[1] - http://www.imore.com/intel-launches-5th-generation-broadwell-processors
[2] - http://www.intel.com/p/en_US/support/highlights/graphics/4cp-p5200gfx