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HP Recommended
840 G1
Microsoft Windows 10 (64-bit)

Hello, I have an HP 840 G1 i5 intel. I have this on a ultra slim docking station and have 2 external monitors connected via hdmi and 1 external monitor is connected with a Siig 2.0 vga to usb adapter. I can get 3 screens to work at the same time but I cannot get the 4th monitor to connect. When I go into the properties and extend the desktop one of the screens disconnects. I have searched the fourms but no resolve to this issue. I am a highly expierenced tech so please assume all the basics were done and I am just not mentioning them. All Drivers are current and up to date. Same with bios and laptop drivers. I have the driver for the monitor as well.  Any help would be much appreiated.

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