Multi-supervisory configurations. Simple that this, the USB solutions in DVI make your laptop support more monitors than it normally could.
If you already use an external display, it is likely that you will need a USB adapter on DVI to connect another. You could check here various laptop parts like adapters.
Why USB and DVI?
USB is implemented on each computer manufactured over the last ten years. It's versatile, it's fast enough and it can be easily multiplied if necessary.
USB 2.0 transmits 480 Mbits per second, which is sufficient for an external video card since compression is strong enough for your resolution.
DVI is a widely accepted digital video connector, it is on most LCD monitors. Another advantage that DVI has collected is the wide selection of converter cables it supports.
DVI can be transformed into VGA, HDMI easily, or used so that your external video card has the flexibility of the required connection.
Opportunities and limitations
The possibilities extend well beyond those that are readily available on your laptop. Most laptops have the capacity of an external screen at most. It limits the number of total displays to two; The internal and external screen.
When the situation requires you to use more displays, the best solution is to add a USB adapter to DVI.
These can be stacked, which means that you are no longer limited to two screens. The practical limit is usually six adapters, the built-in video connector, and the internal screen.
However, these adapters use the power of the CPU to make and compress the image that must be displayed on the monitor connected to the DVI USB adapter. On modern systems, it is a notable but insignificant overload.