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Hi guy! Today i will talk about M4800. Multi-Prototype: May be all people don't know or don't care: "M4800 have 2 prototype of Motherboard" <--- it's the dead point that i discovery. Prototype 1: Dell Motherboard LVDS TRPM M4800 (full lucky): + use LVDS for internal Display (with max resolusion is Full HD) + can disable Switch Graphics (run only Quadro/Firepro) full performance, full external port. + if don't want Quardo/Firepro can run with optimus. ---> Replace Wifi + upgrade WWAN/mSata SSD ----> a monster of Workstation Mobile. Prototype 2: Dell Motherboard EDP TRPM M4800: + use eDP for internal Display - eDP full HD / HD+ (not so lucky): + can not disable Switch Graphics. (black screen) + cannot export sigal to HDMI/DP/VGA + internal Display use intelHD 4600 + Quadro/Firepro can use for any Software use Cuda/OpenGL for render/editor. (can disable Quadro/Firepro by DSDT). ---> Replace wifi + upgrade WWAN/mSata SSD ----> a monstar too ( but smaller than Prototype 1). i'm not sure but may be Prototype 3 for 4K display use DP (don't have intelHD4600): + use DP for internal Display - that may be good if can inject monitor by some key or may be bad because don't have intelHD 4600 How check: Use Ubuntu Live: command is: Xrandr <image updating> Check VBIOS <image updating> Use Aida64 report <image updating> Prototype 1: install OSX very very easy. Prototype 2 (is my M4800): very very easy with enable Switch Graphics. (not talk about it). let's talking about disbale Switch Graphics! - big issuse with black screen. .... updating...... next day i will update more. ... more image, more infomation, and more about same hardware (M6800, Zbook 15 Dream Color, 8570w Dream Corlor, ROG 120Hz 3D screen ... ). thanks for watching.