Laptop and 2 monitors

[East0138]

What accessory would I need to have a laptop and 2 external monitors hooked up with the screen extending across all 3 screens? Not duplicating.

 

[k1114]

What laptop do you have? If it has dp you can use that for 2 if the gpu supports 3 total. If it has only 1 other port or the gpu only supports 2, then use a usb adapter but that may lag.