how do i run 3 monitors hp 27er 1 vga input and 2 hdmi input laptop 1 hdmi output?

[willvivaldi]

HP Pavilion 17-ab000 Notebook PC series (Touch) Core i7 NVIDIA GEFORCE GTX
video card can handle up to 4 external monitors NVIDIA GeForce GTX 960M

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-960/specifications
and do I need a USB 3.0 to HDMI External Video Card Multi Monitor Adapter?

http://www.newegg.com/Product/Product.aspx?Item=N82E16812400387

Also I want to connect my PS4, PS3, XBOX ONE, and XBOX 360 to my 3 HP 27er Monitors or just the middle monitor using a HDMI switch hub?

 

[popatim]

While your 960m GPu could handle 4 external displays, HP does not appear to have given you the ability to to that in this laptop.
Using USB adapters will get you added displays but those have their own GPU's built in and will not use the 960M. I mention this in case you were hoping to game across 3 monitors because you can't.

 

[willvivaldi]

While your 960m GPu could handle 4 external displays, HP does not appear to have given you the ability to to that in this laptop.
Using USB adapters will get you added displays but those have their own GPU's built in and will not use the 960M. I mention this in case you were hoping to game across 3 monitors because you can't.

Thank you for answering me popatim, wanted to use my 3 monitors with my laptop just for viewing purposes only and for university studies, Ok do I need one or 2 USB Adapters with the USB to HDMI or USB to VGA out the HP 27er have 2 HDMI in and 1 VGA in which is better considering using the HDMI or the VGA for the USB adapter.