How to connect 3rd monitor with only 2 outputs

[dookiebooty]

I have a Dell i3847-5386BK with an Intel HD Graphics 4600 Video Card.

The graphics card can support 3 monitors but the back of the tower only has two outputs: 1 HDMI and 1 VGA. I already have two monitors connected (Dell S2440L). How can I connect a third monitor while keeping the ability for extended desktop?

 

[chris987]

Intel® HD Graphics 4600 ''Dual Simultaneous HDMI'' supported so an HDMI splitter should work.

 

[popatim]

Add in another graphics card. You can still extend the desktop to a secondary GPU.