i have a usb video card for sale. It allow you to use 2 additional monitors. Works great on laptops. the model is Diamond Multimedia DV100. it does above 1080p.
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USB 3.0 backwards compatible to USB 2.0
Dual Head Output
Resolutions up to 2048 x 1152 (including 1080p)
Integrated DVI (with HDCP)
Integrated HDMI (with HDCP 1.3)
https://www.newegg.com/Product/Product.aspx?Item=N82E show contact info