Usb monitors

I’m looking for a second screen for enhanced laptop patching during node.

How do usb monitors like the following work? - http://www.ebuyer.com/363333-lenovo-thinkvision-lt1421-14-tn-led-lcd-monitor-t52deeu

Clearly it’s not going to get any gpu acceleration so would be crap for a renderer screen, but would it be ok for patching on, and then using the laptop screen for renderers?